Karyotype counts

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The following table has been modified from Lorite & Palomeque (2010). It lists all but the most recently published ant karyotypes.

Please note that taxa with variable numbers of chromosomes will be listed multiple times, once for each count.

Subfamily Taxon n 2n Source Notes
Myrmicinae Acanthomyrmex sp. 24 Sarawak, TJAN & al. (1986)
Myrmicinae Acanthomyrmex sp. 1 11 Malaysia, GOÑI & al. (1982)
Myrmicinae Acanthomyrmex sp. 2 22 Malaysia, GOÑI & al. (1982)
Myrmicinae Acanthomyrmex sp. 3 11 22 Malaysia, IMAI & al. (1983)
Myrmicinae Acromyrmex ambiguus 38 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Acromyrmex crassispinus 38 Brazil, FADINI & POMPOLO (1996, K)
Myrmicinae Acromyrmex heyeri 38 Uruguay, GOÑI & al. (1983, K); Brazil, SANTOS-COLARES & al. (1997, M)
Myrmicinae Acromyrmex hispidus 38 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Acromyrmex subterraneus 38 Brazil, FADINI & POMPOLO (1996, K)
Formicinae Acropyga acutiventris 15 28 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) Only the chromosome number is reported in both papers, so that it is not possible to know the origin of the chromosome-number variability.
Formicinae Acropyga acutiventris 15 29 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) Only the chromosome number is reported in both papers, so that it is not possible to know the origin of the chromosome-number variability.
Formicinae Acropyga sp. 32 Indonesia, IMAI & al. (1985)
Formicinae Acropyga sp. 15 30 Sarawak, TJAN & al. (1986)
Aenictinae Aenictus brevicornis 24 India, IMAI & al. (1984, K)
Aenictinae Aenictus laeviceps 22 Malaysia, IMAI & al. (1983)
Aenictinae Aenictus sp. (near Aenictus camposi) 15 30 Taiwan, HUNG & al. (1972)
Amblyoponinae Amblyopone australis 24 48 Australia, IMAI & al. (1977, M, K)
Amblyoponinae Amblyopone cf. fortis 44 Australia, IMAI & al. (1977, K)
Ponerinae Anochetus graeffei 30 India, IMAI & al. (1984, K) Two different chromosome numbers have been reported, 2n = 30 and 2n = 38 (IMAI & al. 1984, 1985). It is not possible to see the relationship since only the 2n = 30 karyotype has been published (IMAI & al. 1984).
Ponerinae Anochetus graeffei 38 Indonesia, IMAI & al. (1985) Two different chromosome numbers have been reported, 2n = 30 and 2n = 38 (IMAI & al. 1984, 1985). It is not possible to see the relationship since only the 2n = 30 karyotype has been published (IMAI & al. 1984).
Ponerinae Anochetus horridus 46 French Guiana, Mariano et al., 2011 Karyotype formula: 8M + 4SM+ 34T
Ponerinae Anochetus madaraszi 28 India, IMAI & al. (1984, K)
Ponerinae Anochetus modicus 30 Indonesia, IMAI & al. (1985)
Ponerinae Anochetus sp. 17 34 Sarawak, TJAN & al. (1986)
Ponerinae Anochetus sp. 1 24 Malaysia, GOÑI & al. (1982)
Ponerinae Anochetus sp. 2 19 Malaysia, GOÑI & al. (1982)
Ponerinae Anochetus sp. 4 30 India, IMAI & al. (1984, K)
Ponerinae Anochetus sp. 5 34 India, IMAI & al. (1984, K)
Ponerinae Anochetus yerburyi 30 India, IMAI & al. (1984, K)
Dolichoderinae Anonychomyrma itinerans 8 16 Australia, CROZIER (1968a, K, as Iridomyrmex itinerans)
Dolichoderinae Anonychomyrma sp. 16 Australia, IMAI & al. (1977, K, as Iridomyrmex sp., ANIC-10)
Formicinae Anoplolepis gracilipes 17 34 Malaysia, GOÑI & al. (1982), IMAI & al. (1983); India, IMAI & al. (1984, K); Indonesia, IMAI & al. (1985); Sarawak, TJAN & al. (1986)
Myrmicinae Aphaenogaster beccarii 30 Malaysia, IMAI & al. (1983) Two different chromosome numbers have been reported for this species: 2n = 30 (IMAI & al. 1983) and 2n = 46 (IMAI & al. 1984). However, only the chromosome number was given in the first paper and the possible origin of this variation is not explained.
Myrmicinae Aphaenogaster beccarii 46 India, IMAI & al. (1984, K) Two different chromosome numbers have been reported for this species: 2n = 30 (IMAI & al. 1983) and 2n = 46 (IMAI & al. 1984). However, only the chromosome number was given in the first paper and the possible origin of this variation is not explained.
Myrmicinae Aphaenogaster depilis 34 Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Myrmicinae Aphaenogaster famelica 17 34 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969), IMAI (1971, K)
Myrmicinae Aphaenogaster fulva 36 USA, CROZIER (1977, K)
Myrmicinae Aphaenogaster gibbosa 11 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983) For Swiss populations, n = 11 is reported (HAUSCHTECK-JUNGEN & JUNGEN 1983) but, in Spanish populations, n = 17 was found (PALOMEQUE & al. 1993b). It is not possible to make comparisons since only the chromosome number was given in the first paper. In addition to this, in Spanish populations a polymorphism was also detected. Although the standard karyotype is n = 17, there are individuals with n = 16 due to a fusion of two telocentric chromosomes (LORITE & al. 2000).

Myrmicinae

Aphaenogaster gibbosa 16 Spain, PALOMEQUE & al. (1993b, M, K), LORITE & al. (2000, M, K) For Swiss populations, n = 11 is reported (HAUSCHTECK-JUNGEN & JUNGEN 1983) but, in Spanish populations, n = 17 was found (PALOMEQUE & al. 1993b). It is not possible to make comparisons since only the chromosome number was given in the first paper. In addition to this, in Spanish populations a polymorphism was also detected. Although the standard karyotype is n = 17, there are individuals with n = 16 due to a fusion of two telocentric chromosomes (LORITE & al. 2000).
Myrmicinae Aphaenogaster gibbosa 17 Spain, PALOMEQUE & al. (1993b, M, K), LORITE & al. (2000, M, K) For Swiss populations, n = 11 is reported (HAUSCHTECK-JUNGEN & JUNGEN 1983) but, in Spanish populations, n = 17 was found (PALOMEQUE & al. 1993b). It is not possible to make comparisons since only the chromosome number was given in the first paper. In addition to this, in Spanish populations a polymorphism was also detected. Although the standard karyotype is n = 17, there are individuals with n = 16 due to a fusion of two telocentric chromosomes (LORITE & al. 2000).
Myrmicinae Aphaenogaster iberica 17 34 Spain, PALOMEQUE & al. (1993a, M, K), PALOMEQUE & al. (1993b, M, K), LORITE & al. 2000 (M, K) In this species an intrapopulation polymorphism has been detected due to the presence of a supernumerary chromosome segment in the long arm of one of its metacentric chromosomes (PALOMEQUE & al. 1993a). The presence of this segment changes the chromosome to submetacentric.
Myrmicinae Aphaenogaster lamellidens 38 USA, CROZIER (1977, K), TABER & COKENDOLPHER (1988)
Myrmicinae Aphaenogaster longiceps 45 Australia, IMAI & al. 1977 (K) In the 2n = 45 karyotype a heteromorphic chromosome pair is present; a large metacentric is single and there are two telocentric ones corresponding to its two arms.
Myrmicinae Aphaenogaster longiceps 46 Australia, IMAI & al. 1977 (K) In the 2n = 45 karyotype a heteromorphic chromosome pair is present; a large metacentric is single and there are two telocentric ones corresponding to its two arms.
Myrmicinae Aphaenogaster miamiana 36 USA, CROZIER (1977, K)
Myrmicinae Aphaenogaster osimensis 16 32 Japan, IMAI & YOSIDA (1964, as A. sp.), IMAI & YOSIDA (1966), IMAI (1966, M), IMAI (1969), IMAI (1971, K)
Myrmicinae Aphaenogaster rudis 16 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 17 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 18 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 20 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 21 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 22 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 40 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 41 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.

Myrmicinae

Aphaenogaster rudis 42 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster rudis 44 USA, CROZIER (1970b), CROZIER (1975, K), CROZIER (1977) Highly variable chromosome numbers have been found for this species, n = 16-18, 20, 22 and 2n = 40-42, 44 (CROZIER 1969b, 1975, 1977). The different karyotypes are hardly related and it is possible that several sibling species are included in this taxon.
Myrmicinae Aphaenogaster sardoa 34 Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Myrmicinae Aphaenogaster senilis 16 32 Spain, PALOMEQUE & al. 1993a (M, K), PALOMEQUE & al. (1993b, M, K), LORITE & al. 2000 (M, K) This species presents a polymorphism similar to that observed in Aphaenogaster iberica (PALOMEQUE & al. 1993a)
Myrmicinae Aphaenogaster smythiesii 11 22 Japan, IMAI (1969), IMAI (1971, K) Two different chromosome numbers have been reported. In Japanese populations the diploid number is 2n = 22 with a karyotype formula n = 10 SM + 1 M (IMAI & al. 1971). However, Indian populations are 2n = 34, n = 8 M + 9 A (IMAI & al. 1984). The two karyotypes are difficult to relate but there are not enough data to determine whether they represent different species.
Myrmicinae Aphaenogaster smythiesii 34 India, IMAI & al. 1984 (K) Two different chromosome numbers have been reported. In Japanese populations the diploid number is 2n = 22 with a karyotype formula n = 10 SM + 1 M (IMAI & al. 1971). However, Indian populations are 2n = 34, n = 8 M + 9 A (IMAI & al. 1984). The two karyotypes are difficult to relate but there are not enough data to determine whether they represent different species.
Myrmicinae Aphaenogaster sp. 30 Malaysia, GOÑI & al. (1982)
Myrmicinae Aphaenogaster subterranea 22 Switzerland, HAUSCHTECK (1962, M)
Myrmicinae Aphaenogaster subterranea 11 22 Switzerland and Germany, HAUSCHTECK-JUNGEN & JUNGEN (1983, K)
Myrmicinae Aphaenogaster testaceopilosa 17 34 Tunisia, Spain and Croatia, HAUSCHTECK-JUNGEN & JUNGEN (1983, K) HAUSCHTECK-JUNGEN & JUNGEN (1983) indicated that material of this species was collected in Tunisia, Spain, and Croatia. Probably there are mistakes in some of the specimen identifications concerning the distribution of this species is North Africa (Alberto Tinaut, personal communication). The authors do not indicate what populations have been used to determine the chromosome number.
Myrmicinae Aphaenogaster tipuna 34 Taiwan, HUNG & al. (1972)
Myrmicinae Aphaenogaster treatae 42 USA, CROZIER (1977, K)
Myrmicinae Apterostigma mayri 24 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Apterostigma sp. 20 Brazil, FADINI & POMPOLO (1996, K)
Myrmicinae Apterostigma sp. 24 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Apterostigma sp. 32 Karyotype formula: 14M + 6SM + 10ST + 2T
Dolichoderinae Arnoldius pusillus (as Bothriomyrmex pusillus) 22 Australia, IMAI & al. (1977, K)
Myrmicinae Atta bisphaerica 22 Brazil, FADINI & POMPOLO (1996, K)
Myrmicinae Atta colombica 11 22 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Atta laevigata 22 Brazil, FADINI & POMPOLO (1996, K)
Myrmicinae Atta sexdens 22 Brazil, FADINI & POMPOLO (1996, K), SANTOS-COLARES & al. (1997, M)
Dolichoderinae Bothriomyrmex corsicus Santschi, 1923 (as Bothriomyrmex gibbus) 11 Italy, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Dolichoderinae Bothriomyrmex sp. 11 Switzerland, HAUSCHTECK (1963)
Formicinae Brachymyrmex sp. 18 Brazil, CROZIER (1970b, K)
Ponerinae Brachyponera lutea 16 Australia, IMAI & al. (1977, K)
Ponerinae Brachyponera luteipes 11 22 Japan, IMAI & YOSIDA (1964), IMAI (1969, K)
Ponerinae Brachyponera luteipes 22 India, IMAI & al. (1984, K)
Formicinae Calomyrmex sp. (as ANIC-1) 28 Australia, IMAI & al. (1977, K)
Formicinae Camponotus aethiops 42 France, old Yugoslavia, HAUSCHTECK-JUNGEN & JUNGEN (1983, K)
Formicinae Camponotus alii 42 Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983) HAUSCHTECK-JUNGEN & JUNGEN (1983) reported the chromosome number of this species from Spanish populations. There is probably a mistake in the specimen identification since the presence of this species in Spain has not been cited (Alberto Tinaut, personal communication).
Formicinae Camponotus atriceps 20 40 Brazil, MARIANO & al. (2001, K), Aguiar et al. (2017)
Formicinae Camponotus balzani 20 40 Brazil, MARIANO & al. (2001, K)
Formicinae Camponotus bonariensis 40 Uruguay, GOÑI & al. (1983, K)
Formicinae Camponotus cingulatus 40 Brazil, MARIANO & al. (2001, K), Aguiar et al. (2017)
Formicinae Camponotus compressus 10 India, KUMBKARNI (1965) Two different chromosome numbers have been given for this species, n = 10 in Indian population (KUMBKARNI 1965) and n = 20 in Tunisian population (HAUSCHTECK-JUNGEN in CROZIER 1975). This was explained as a possible geographic variation. However, HAUSCHTECK-JUNGEN & JUNGEN (1983) indicated that the paper of KUMBKARNI (1965), has no convincing photographs and that their preparation show clearly n = 20 in the Tunisian specimens. Therefore, n = 10 is probably a mistake.
Formicinae Camponotus compressus 20 40 Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983, K) Two different chromosome numbers have been given for this species, n = 10 in Indian population (KUMBKARNI 1965) and n = 20 in Tunisian population (HAUSCHTECK-JUNGEN in CROZIER 1975). This was explained as a possible geographic variation. However, HAUSCHTECK-JUNGEN & JUNGEN (1983) indicated that the paper of KUMBKARNI (1965), has no convincing photographs and that their preparation show clearly n = 20 in the Tunisian specimens. Therefore, n = 10 is probably a mistake.
Formicinae Camponotus consobrinus 23 46 Australia, IMAI & al. (1977, K)
Formicinae Camponotus crassisquamis 39 India, IMAI & al. (1984, K) The diploid number 2n = 39 is due to the presence of a heteromorphic chromosome pair with a metacentric and two telocentric chromosomes.
Formicinae Camponotus crassisquamis 40 India, IMAI & al. (1984, K) The diploid number 2n = 39 is due to the presence of a heteromorphic chromosome pair with a metacentric and two telocentric chromosomes.
Formicinae Camponotus crassus 10 20 Brazil, MARIANO & al. (2001, K)
Formicinae Camponotus cruentatus 18 Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983) HAUSCHTECK-JUNGEN & JUNGEN (1983) reported n = 18 in a Spanish population whereas LORITE & al. (2002b) found n = 20. In the first paper, no photographs were provided, so that comparisons are not possible.
Formicinae Camponotus cruentatus 20 Spain, LORITE & al. (2002b, M, K) HAUSCHTECK-JUNGEN & JUNGEN (1983) reported n = 18 in a Spanish population whereas LORITE & al. (2002b) found n = 20. In the first paper, no photographs were provided, so that comparisons are not possible.
Formicinae Camponotus dolendus 20 India, IMAI & al. (1984, K)
Formicinae Camponotus femoratus 44 French Guiana, Mariano et al., 2011 Karyotype formula: 4ST + 40T
Formicinae Camponotus festinus 19 38 Malaysia, IMAI & al. (1983)
Formicinae Camponotus foreli 17 34 Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Formicinae Camponotus japonicus 14 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), (1969, as Camponotus sp.) For this species two different chromosomes numbers have been published, n = 13 (IMAI & KUBOTA 1972) and n = 14 (IMAI 1966, 1969, IMAI & YOSIDA 1964). The analysis of the photograph in the paper of IMAI & KUBOTA (1972) shows that 13 chromosomes seem to be present. Thus, the value n = 14 could be a mistake due to the presence of a remarkable secondary constriction at the proximal part of the short arm of one chromosome. Probably this chromosome-satellite has been considered a small independent chromosome.
Formicinae Camponotus japonicus 13 26 Japan, IMAI & KUBOTA (1972, K) For this species two different chromosomes numbers have been published, n = 13 (IMAI & KUBOTA 1972) and n = 14 (IMAI 1966, 1969, IMAI & YOSIDA 1964). The analysis of the photograph in the paper of IMAI & KUBOTA (1972) shows that 13 chromosomes seem to be present. Thus, the value n = 14 could be a mistake due to the presence of a remarkable secondary constriction at the proximal part of the short arm of one chromosome. Probably this chromosome-satellite has been considered a small independent chromosome.
Formicinae Camponotus kiusiuensis 28 Japan, IMAI & YOSIDA (1964), IMAI (1966, M) (1969, K)
Formicinae Camponotus lateralis 28 Switzerland, HAUSCHTECK (1962, M)
Formicinae Camponotus ligniperda 14 28 Switzerland, HAUSCHTECK (1961, M), HAUSCHTECK-JUNGEN & JUNGEN (1983)
Formicinae Camponotus mitis 20 India, IMAI & al. (1984, K)
Formicinae Camponotus mus 26 Uruguay, GOÑI & al. (1983, K)
Formicinae Camponotus obscuripes 28 Japan, IMAI (1969)
Formicinae Camponotus parius 40 India, IMAI & al. (1984, K)
Formicinae Camponotus pilicornis 50 Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Formicinae Camponotus punctulatus 40 Uruguay, GOÑI & al. (1983, K)
Formicinae Camponotus renggeri 40 Brazil, Aguiar et al. (2017)
Formicinae Camponotus rufipes 20 40 Uruguay, GOÑI & al. (1983, K), Aguiar et al. (2017) MARIANO & al. (2001) found in females a 2n = 39-40. The karyotype 2n = 39 presents a heteromorphic chromosome pair with a metacentric and two telocentric chromosomes.
Formicinae Camponotus rufipes 39 Brazil, MARIANO & al. (2001, K) MARIANO & al. (2001) found in females a 2n = 39-40. The karyotype 2n = 39 presents a heteromorphic chromosome pair with a metacentric and two telocentric chromosomes.
Formicinae Camponotus rufipes 40 Brazil, MARIANO & al. (2001, K) MARIANO & al. (2001) found in females a 2n = 39-40. The karyotype 2n = 39 presents a heteromorphic chromosome pair with a metacentric and two telocentric chromosomes.
Formicinae Camponotus rufoglaucus 18 Tunisia, Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983) HAUSCHTECK-JUNGEN & JUNGEN (1983) indicated that material of this species was collected in Tunisia and Spain. However, the presence of this species in Spain has not been cited (Alberto Tinaut, pers. comm.). The authors do not indicate whether the chromosome numbers have been derived from the analysis of the Tunisian or Spanish populations. Some Spanish myrmecologists consider that the Spanish citations of this species belong to Camponotus micans (GÓMEZ & ESPADALER 2009).
Formicinae Camponotus sericeiventris 40 Brazil, MARIANO & al. (2001)
Formicinae Camponotus sericeus 44 India, IMAI & al. (1984, K)
Formicinae Camponotus sylvaticus 20 40 Greece, Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Formicinae Camponotus barbatus taylori 24 India, IMAI & al. (1984, K)
Formicinae Camponotus thraso 40 India, IMAI & al. (1984, K)
Formicinae Camponotus sp. (as Myrmamblys sp. 1) 9 18 Japan, IMAI & KUBOTA (1972, K)
Formicinae Camponotus sp. (as Myrmobrachys sp.) 40 Brazil, MARIANO & al. (2001, K) MARIANO & al. (2001): The diploid chromosome number of this species is 2n = 40, but the presence of one to three B-chromosomes has been detected.
Formicinae Camponotus sp. (as Myrmobrachys sp.) 41 Brazil, MARIANO & al. (2001, K) MARIANO & al. (2001): The diploid chromosome number of this species is 2n = 40, but the presence of one to three B-chromosomes has been detected.
Formicinae Camponotus sp. (as Myrmobrachys sp.) 42 Brazil, MARIANO & al. (2001, K) MARIANO & al. (2001): The diploid chromosome number of this species is 2n = 40, but the presence of one to three B-chromosomes has been detected.
Formicinae Camponotus sp. (as Myrmobrachys sp.) 43 Brazil, MARIANO & al. (2001, K) MARIANO & al. (2001): The diploid chromosome number of this species is 2n = 40, but the presence of one to three B-chromosomes has been detected.
Formicinae Camponotus sp. 9 18 Japan, IMAI & YOSIDA (1964), IMAI (1966, M)
Formicinae Camponotus sp. (as ANIC-1) 23 46 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-10) 46 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-11) 32 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-12) 38 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-13) 10 20 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-14) 19 38 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-2) 23 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-3) 48 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-5) 32 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-8) 32 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as ANIC-9) 38 Australia, IMAI & al. (1977, K)
Formicinae Camponotus sp. (as C. impressus group) 26 52 USA, CROZIER (1970b, K)
Formicinae Camponotus sp. (as C. variegatus complex) 20 Taiwan, HUNG & al. (1972)
Formicinae Camponotus sp. 1 19 Malaysia, GOÑI & al. (1982)
Formicinae Camponotus sp. 1 38 Indonesia, IMAI & al. (1985)
Formicinae Camponotus sp. 1 39 Indonesia, IMAI & al. (1985)
Formicinae Camponotus sp. 1 40 Sarawak, TJAN & al. (1986)
Formicinae Camponotus sp. 10 13 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 10 14 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 10 (as near C. infuscus) 20 India, IMAI & al. (1984, K)
Formicinae Camponotus sp. 11 52 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 12 18 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 12 (as near C. variegatus) 34 India, IMAI & al. (1984, K)
Formicinae Camponotus sp. 13 18 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 2 20 40 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Formicinae Camponotus sp. 2 20 Sarawak, TJAN & al. (1986)
Formicinae Camponotus sp. 2 38 Indonesia, IMAI & al. (1985)
Formicinae Camponotus sp. 3 38 Malaysia, GOÑI & al. (1982)
Formicinae Camponotus sp. 4 18 36 Malaysia, GOÑI & al. (1982)
Formicinae Camponotus sp. 5 20 40 Malaysia, GOÑI & al. (1982)
Formicinae Camponotus sp. 6 44 Malaysia, GOÑI & al. (1982)
Formicinae Camponotus sp. 7 20 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 7 (as near C. variegatus) 32 India, IMAI & al. (1984, K)
Formicinae Camponotus sp. 8 38 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 8 39 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 9 40 Malaysia, IMAI & al. (1983)
Formicinae Camponotus sp. 9 (as near C. variegatus) 34 India, IMAI & al. (1984, K)
Formicinae Camponotus sp. 9 (as near C. variegatus) 35 India, IMAI & al. (1984, K)
Formicinae Camponotus vagus 28 Switzerland, HAUSCHTECK (1961, M)
Formicinae Camponotus variegatus 26 India, IMAI & al. (1984, K)
Formicinae Camponotus vitiosus (as C. caryae, C. tokyoensis) 9 18 Japan, IMAI (1966a, M, as Camponotus sp.), IMAI (1969, K, as C. caryae group sp.), IMAI & KUBOTA (1972, K)
Myrmicinae Cardiocondyla nuda 28 India, IMAI & al. (1984, K)
Myrmicinae Cardiocondyla sp. 40 Malaysia, GOÑI & al. (1982)
Myrmicinae Carebara asina (as Oligomyrmex asinus) 44 India, IMAI & al. (1984, K)
Myrmicinae Carebara sauteri (as Oligomyrmex sauteri) 18 Taiwan, HUNG & al. (1972)
Myrmicinae Carebara sp. (as ANIC-6) 38 Australia, IMAI & al. (1977, K, as Oligomyrmex sp., ANIC-6)
Myrmicinae Carebara sp. 1 36 Malaysia, GOÑI & al. (1982, as Oligomyrmex sp. 1)
Myrmicinae Carebara sp. 1 34 Indonesia, IMAI & al. (1985, as Oligomyrmex sp. 1)
Myrmicinae Carebara sp. 1 36 Sarawak, TJAN & al. (1986, as Oligomyrmex sp. 1)
Myrmicinae Carebara sp. 2 44 India, IMAI & al. (1984, K, as Oligomyrmex sp. 2)
Myrmicinae Carebara sp. 2 42 Indonesia, IMAI & al. (1985, as Oligomyrmex sp. 2)
Myrmicinae Carebara sp. 2 44 Sarawak, TJAN & al. (1986, as Oligomyrmex sp. 2)
Myrmicinae Carebara sp. 4 16 32 India, IMAI & al. (1984, K, as Oligomyrmex sp. 4)
Myrmicinae Carebara sp. 5 26 India, IMAI & al. (1984, K, as Oligomyrmex sp. 5)
Myrmicinae Carebara diversa (as Pheidologeton diversus) 42 India, IMAI & al. (1984, K)
Myrmicinae Carebara sp. (as Pheidologeton sp.) 42 Sarawak, TJAN & al. (1986)
Formicinae Cataglyphis bicolor 26 Israel, Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Formicinae Cataglyphis iberica 26 Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983, as C. albicans) HAUSCHTECK-JUNGEN & JUNGEN (1983) reported the chromosome number of populations of Cataglypis albicans collected in Spain. However, because of the review of the genus Cataglyphis in Spain, the Spanish material classified as C. albicans may be reasigned to Cataglyphis iberica (TINAUT & PLAZA 1990).
Formicinae Cataglyphis longipedem (as Cataglyphis setipes) 54 India, IMAI & al. (1984, K)
Ponerinae Centromyrmex feae 44 India, IMAI & al. (1984, K)
Dorylinae Cerapachys sp. 50 Sarawak, TJAN & al. (1986)
Dorylinae Cerapachys sp. 25 50 Malaysia, GOÑI & al. (1982)
Myrmicinae Temnothorax kutteri 12 France, FISCHER (1987, K)
Myrmicinae Temnothorax muellerianus (as Chalepoxenus siciliensis) 12 Italy, France, Croatia, Greece, FISCHER (1987, K)
Myrmicinae Colobostruma alinodis 11 22 Australia, CROZIER (1968d, M)
Myrmicinae Colobostruma sp. 10 20 Australia, CROZIER (1968d, M, as Epopostruma sp.)
Myrmicinae Colobostruma sp. (as ANIC-1) 22 Australia, IMAI & al. (1977, K)
Myrmicinae Crematogaster biroi 24 India, IMAI & al. (1984, K)
Myrmicinae Crematogaster brunnea 36 India, IMAI & al. (1984, K)
Myrmicinae Crematogaster laboriosa 26 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969, K)
Myrmicinae Crematogaster rothneyi 50 India, IMAI & al. (1984, K)
Myrmicinae Crematogaster sp. 40 Japan, IMAI (1969, K)
Myrmicinae Crematogaster sp. 26 Sarawak, TJAN & al. (1986)
Myrmicinae Crematogaster sp. (as ANIC-1) 12 24 Australia, IMAI & al. (1977, K)
Myrmicinae Crematogaster sp. (as ANIC-2) 26 Australia, IMAI & al. (1977, K)
Myrmicinae Crematogaster sp. (as ANIC-2) 39 Australia, IMAI & al. (1977, K)
Myrmicinae Crematogaster sp. 1 26 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Myrmicinae Crematogaster sp. 1 24 Indonesia, IMAI & al. (1985)
Myrmicinae Crematogaster sp. 2 36 Malaysia, GOÑI & al. (1982)
Myrmicinae Crematogaster sp. 2 56 Indonesia, IMAI & al. (1985)
Myrmicinae Crematogaster sp. 2 58 Indonesia, IMAI & al. (1985)
Myrmicinae Crematogaster sp. 3 36 Malaysia, GOÑI & al. (1982)
Myrmicinae Crematogaster sp. 4 24 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Myrmicinae Crematogaster sp. 5 26 Malaysia, IMAI & al. (1983)
Myrmicinae Crematogaster sp. 6 26 Malaysia, IMAI & al. (1983)
Myrmicinae Crematogaster subnuda 18 36 India, IMAI & al. (1984, K)
Ponerinae Cryptopone rotundiceps 12 Australia, IMAI & al. (1977, K)
Ponerinae Cryptopone sauteri 14 28 Japan, IMAI & YOSIDA (1964), IMAI (1969, K), IMAI & KUBOTA (1972, K)
Ponerinae Cryptopone testacea 9 18 Malaysia, IMAI & al. (1983); Sarawak, TJAN & al. (1986)
Dorylinae Cylindromyrmex brasiliensis 34 Brazil, MARIANO & al. (2004b, M, K)
Myrmicinae Cyphomyrmex cornutus 22 French Guiana, Mariano et al., 2011 Karyotype formula: 10M + 12SM
Myrmicinae Cyphomyrmex costatus 20 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Cyphomyrmex rimosus 32 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Dacetinops concinnus 16 Malaysia, IMAI & al. (1983)
Ponerinae Diacamma rugosum (as D. vagans) 7 14 India, IMAI & al. (1984, K)
Ponerinae Diacamma sp. 18 36 Malaysia, GOÑI & al. (1982)
Ponerinae Diacamma sp. 66 Indonesia, IMAI & al. (1985)
Ponerinae Diacamma sp. 58 Sarawak, TJAN & al. (1986)
Ponerinae Diacamma sp. 1 44 Malaysia, IMAI & al. (1983)
Ponerinae Diacamma sp. 2 30 India, IMAI & al. (1984)
Ponerinae Dinoponera lucida 57 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M) The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.
Ponerinae Dinoponera lucida 58 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M)

The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.

Ponerinae

Dinoponera lucida 59 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M)

The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.

Ponerinae

Dinoponera lucida 60

Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M)

The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.

Ponerinae Dinoponera lucida 106 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M) The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.
Ponerinae Dinoponera lucida 116 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M) The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.
Ponerinae Dinoponera lucida 118 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M) The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.
Ponerinae Dinoponera lucida 120 Brazil, MARIANO & al. (2004a, M), MARIANO & al. (2008, M) The first chromosome number reported for this species was 2n = 106, making this the ant species with the highest chromosome number (MARIANO & al. 2004). With the analysis of new populations, higher chromosome numbers were found, 2n = 116, 118 and 120 (MARIANO & al. 2008), but the small size of the chromosomes do not allow the cytogenetic causes of the observed variation to be determined.
Proceratiinae Discothyrea sp. (as near D. bryanti) 30 Indonesia, IMAI & al. (1985)
Dolichoderinae Doleromyrma sp. (as darwinianus-group 7 14 Australia, IMAI & al. (1977, K, as Iridomyrmex sp., ANIC-8)
Dolichoderinae Doleromyrma sp. (as darwinianus-group) 12 Australia, IMAI & al. (1977, K, as Iridomyrmex sp., ANIC-9)
Dolichoderinae Dolichoderus quadripunctatus 28 Japan, IMAI (1969)
Dolichoderinae Dolichoderus scabridus (as Diceratoclinea scrabida) 14 28 Australia, CROZIER (1966), IMAI & al. (1977, M)
Dolichoderinae Dolichoderus sp. 18 Malaysia, GOÑI & al. (1982)
Dolichoderinae Dolichoderus thoracicus (as D. bituberculatus) 30 Malaysia, IMAI & al. (1983) The variation in the chromosome number is due to the presence of B-chromosomes.
Dolichoderinae Dolichoderus thoracicus (as D. bituberculatus) 31 Malaysia, IMAI & al. (1983) The variation in the chromosome number is due to the presence of B-chromosomes.
Dolichoderinae Dolichoderus thoracicus (as D. bituberculatus) 33 Malaysia, IMAI & al. (1983) The variation in the chromosome number is due to the presence of B-chromosomes.
Dolichoderinae Dolichoderus thoracicus (as D. bituberculatus) 30 Indonesia, IMAI & al. (1985) The variation in the chromosome number is due to the presence of B-chromosomes.
Dolichoderinae Dorymyrmex bicolor 13 26 USA, CROZIER (1970b, K)
Dolichoderinae Dorymyrmex flavus (as Conomyrma flava) 26 USA, COKENDOLPHER & FRANCKE (1984, K)
Dolichoderinae Dorymyrmex pulchellus 18 Brazil, CROZIER (1968b, M, as Dorymyrex sp.) (1970b, K)
Dolichoderinae Dorymyrmex pyramicus 18 Uruguay, GOÑI & al. (1983, K)
Dolichoderinae Dorymyrmex thoracicus 9 Peru, CROZIER (1970b, K)
Formicinae Echinopla sp. 1 12 24 Malaysia, IMAI & al. (1983)
Ectatomminae Ectatomma brunneum 44 Brazil, BARROS & al. (2008, K)
Ectatomminae Ectatomma edentatum 46 Brazil, BARROS & al. (2008)
Ectatomminae Ectatomma muticum 20 Brazil, BARROS & al. (2008, K)
Ectatomminae Ectatomma permagnum 46 Brazil, BARROS & al. (2008, K)
Ectatomminae Ectatomma tuberculatum 36 Brazil, BARROS & al. (2008, K)
Ponerinae Ectomomyrmex astutus 18 Indonesia, IMAI & al. (1985) Indonesian populations were reported to have 2n = 18, 22 (IMAI & al. 1985). Only the chromosome numbers are published but without comments concerning the karyotypes.
Ponerinae Ectomomyrmex astutus 22 Indonesia, IMAI & al. (1985) Indonesian populations were reported to have 2n = 18, 22 (IMAI & al. 1985). Only the chromosome numbers are published but without comments concerning the karyotypes.
Ponerinae Ectomomyrmex leeuwenhoeki 8 16 Malaysia, IMAI & al. (1983)
Myrmicinae Eurhopalothrix sp. (as E. procera group) 18 Malaysia, IMAI & al. (1983)
Dolichoderinae Forelius mccooki (as F. foetida) 16 32 USA, CROZIER (1970b, K), CROZIER (1975, K)
Formicinae Formica 3 spp. (as F. fusca group) 27 HUNG (in CROZIER 1975)
Formicinae Formica 4 spp. 26 HUNG (in CROZIER 1975)
Formicinae Formica aquilonia 26 Finland, ROSENGREN & al. (1980, M)
Formicinae Formica candida (as F. picea, F. transkaucasica) 52 Japan, IMAI (1969)
Formicinae Formica candida (as F. picea, F. transkaucasica) 26 52 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M),
Formicinae Formica candida (as F. picea, F. transkaucasica) 26 Finland, ROSENGREN & al. (1980)
Formicinae Formica cinerea 27 54 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, K)
Formicinae Formica cunicularia 27 54 France, HAUSCHTECK-JUNGEN & JUNGEN (1976, K)
Formicinae Formica dakotensis 26 HUNG (in CROZIER 1975)
Formicinae Formica exsecta 26 52 Switzerland, AGOSTI & HAUSCHTECK-JUNGEN (1987), HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica frontalis 52 Spain, LORITE & al. (2002b, M, K), LORITE & al. (2004a, M)
Formicinae Formica fusca 54 Japan, IMAI (1969)
Formicinae Formica fusca 27 Germany, Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica gagates 27 54 France, old Yugoslavia, HAUSCHTECK-JUNGEN & JUNGEN (1976)
Formicinae Formica gerardi 27 Spain, LORITE & al. (1998a, M, K) (2002b, M, K)
Formicinae Formica japonica 27 54 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969), CROZIER (1975, M)
Formicinae Formica lemani 54 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976)
Formicinae Formica lugubris (as F. nylanderi) 26 54 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica lugubris (as F. nylanderi) 26 Finland, ROSENGREN & al. (1980, M)
Formicinae Formica montana 27 54 USA, HUNG (1969, M)
Formicinae Formica obscuripes 26 USA, HUNG (1969, M)
Formicinae Formica pergandei 26 HUNG in CROZIER (1975)
Formicinae Formica polyctena 26 52 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica polyctena 26 Finland, ROSENGREN & al. (1980)
Formicinae Formica pratensis 26 52 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica pratensis 26 Finland, ROSENGREN & al. (1980)
Formicinae Formica pressilabris 26 Finland, ROSENGREN & al. (1980)
Formicinae Formica reflexa 26 HUNG in CROZIER (1975)
Formicinae Formica rufa 26 52 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica rufibarbis 27 54 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, K)
Formicinae Formica rufibarbis 27 Finland, ROSENGREN & al. (1980)
Formicinae Formica sanguinea 26 52 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969, K); Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, M)
Formicinae Formica subintegra 26 USA, HUNG (1969)
Formicinae Formica truncorum 26 52 Japan, IMAI & YOSIDA (1964), IMAI (1969) For this species an n = 26 was found in populations collected in Japan and in Switzerland (IMAI & YOSIDA 1964, IMAI 1969, HAUSCHTECK-JUNGEN & JUNGEN 1976). Later, in populations from Finland, ROSENGREN & al. (1980) found populations with n = 26 and also with n = 28, but the small size of the chromosomes of this species did not enable the origin of this variation to be determined.
Formicinae Formica truncorum 26 52 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, K) For this species an n = 26 was found in populations collected in Japan and in Switzerland (IMAI & YOSIDA 1964, IMAI 1969, HAUSCHTECK-JUNGEN & JUNGEN 1976). Later, in populations from Finland, ROSENGREN & al. (1980) found populations with n = 26 and also with n = 28, but the small size of the chromosomes of this species did not enable the origin of this variation to be determined.
Formicinae Formica truncorum 28 52 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1976, K) For this species an n = 26 was found in populations collected in Japan and in Switzerland (IMAI & YOSIDA 1964, IMAI 1969, HAUSCHTECK-JUNGEN & JUNGEN 1976). Later, in populations from Finland, ROSENGREN & al. (1980) found populations with n = 26 and also with n = 28, but the small size of the chromosomes of this species did not enable the origin of this variation to be determined.
Formicinae Formica truncorum 26 Finland, ROSENGREN & al. (1980, M) For this species an n = 26 was found in populations collected in Japan and in Switzerland (IMAI & YOSIDA 1964, IMAI 1969, HAUSCHTECK-JUNGEN & JUNGEN 1976). Later, in populations from Finland, ROSENGREN & al. (1980) found populations with n = 26 and also with n = 28, but the small size of the chromosomes of this species did not enable the origin of this variation to be determined.
Formicinae Formica truncorum 27 Finland, ROSENGREN & al. (1980, M) For this species an n = 26 was found in populations collected in Japan and in Switzerland (IMAI & YOSIDA 1964, IMAI 1969, HAUSCHTECK-JUNGEN & JUNGEN 1976). Later, in populations from Finland, ROSENGREN & al. (1980) found populations with n = 26 and also with n = 28, but the small size of the chromosomes of this species did not enable the origin of this variation to be determined.
Formicinae Formica truncorum 28 Finland, ROSENGREN & al. (1980, M) For this species an n = 26 was found in populations collected in Japan and in Switzerland (IMAI & YOSIDA 1964, IMAI 1969, HAUSCHTECK-JUNGEN & JUNGEN 1976). Later, in populations from Finland, ROSENGREN & al. (1980) found populations with n = 26 and also with n = 28, but the small size of the chromosomes of this species did not enable the origin of this variation to be determined.
Formicinae Formica ulkei 26 USA, HUNG (1969, M).
Formicinae Formica uralensis 26 Finland, ROSENGREN & al. (1980, M)
Formicinae Formica yessensis 26 52 Japan, IMAI (1966, M), (1969)
Myrmicinae Formicoxenus chamberlini (as Symmyrmica chamberlini) 28 USA, BUSCHINGER & FRANCOEUR (1983), FRANCOEUR & al. (1985), FISCHER (1987, M)
Myrmicinae Formicoxenus hirticornis 30 FRANCOEUR & al. (1985) Only the chromosome number was reported but the origin of the variation was not indicated.
Myrmicinae Formicoxenus hirticornis 31 FRANCOEUR & al. (1985) Only the chromosome number was reported but the origin of the variation was not indicated.
Myrmicinae Formicoxenus hirticornis 32 FRANCOEUR & al. (1985) Only the chromosome number was reported but the origin of the variation was not indicated.
Myrmicinae Formicoxenus hirticornis 33 FRANCOEUR & al. (1985) Only the chromosome number was reported but the origin of the variation was not indicated.
Myrmicinae Formicoxenus hirticornis 34 FRANCOEUR & al. (1985) Only the chromosome number was reported but the origin of the variation was not indicated.
Myrmicinae Formicoxenus nitidulus 15 France, BUSCHINGER & al. (1980), FRANCOEUR & al. (1985), FISCHER (1987, M)
Myrmicinae Formicoxenus provancheri (as Leptothorax provancheri) 11 22 Canada, BUSCHINGER & al. (1980, K), FISCHER (1987, K)
Myrmicinae Formicoxenus quebecensis 28 Canada, FRANCOEUR & al. (1985, M), FISCHER (1987, M)
Formicinae Gigantiops destructor 78 French Guiana, Mariano et al., 2011 Karyotype formula: 12M + 66T
Ectatomminae Gnamptogenys annulata 68 Brazil, BORGES & al. (2004b, K)
Ectatomminae Gnamptogenys binghamii 22 Malaysia, IMAI & al. (1983)
Ectatomminae Gnamptogenys menadensis 42 Malaysia, GOÑI & al. (1982, as G. sp. 1), IMAI & al. (1983)
Ectatomminae Gnamptogenys sp. 23 46 Brazil, BORGES & al. (2004b, K)
Ectatomminae Gnamptogenys sp. 2 36 Malaysia, GOÑI & al. (1982)
Ectatomminae Gnamptogenys striatula 34 Brazil, BORGES & al. (2004b, K)
Myrmicinae Harpagoxenus canadensis 18 Canada, BUSCHINGER & al. (1980), FISCHER (1987, K)
Myrmicinae Harpagoxenus sublaevis

20

BUSCHINGER & al. (1980), FISCHER (1987, K)
Myrmicinae Harpagoxenus sublaevis 20 40 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983, M)
Heteroponerinae Heteroponera dolo 12 24 Brazil, BORGES & al. (2004a)
Heteroponerinae Heteroponera relicta 11 22 Australia, IMAI & al. (1977, K)
Ponerinae Hypoponera confinis 38 Indonesia, IMAI & al. (1985)
Ponerinae Hypoponera pruinosa 12 24 Malaysia, IMAI & al. (1983)
Ponerinae Hypoponera pruinosa 24 Indonesia, IMAI & al. (1985)
Ponerinae Hypoponera sp. 38 Malaysia, GOÑI & al. (1982)
Ponerinae Hypoponera sp. (as ANIC-1) 19 38 Australia, IMAI & al. (1977, K)
Ponerinae Hypoponera sp. (as ANIC-2) 38 Australia, IMAI & al. (1977, K)
Ponerinae Hypoponera sp. 2 38 Malaysia, IMAI & al. (1983)
Ponerinae Hypoponera sp. 3 36 Malaysia, IMAI & al. (1983)
Formicinae Iberoformica subrufa (as Formica subrufa) 26 Spain, LORITE & al. (2002b, M, K)
Dolichoderinae Iridomyrmex anceps 18 India, IMAI & al. (1984, K) Very different chromosome numbers have been published to this species; 2n = 18 in India (IMAI & al. 1984) and 2n = 48 in Indonesia (IMAI & al. 1985). Only the karyotype is available for the Indian specimens so that it is not possible to ascertain whether this variation is real or a mistake. In any case the 2n = 48 is not a usual chromosome number in the subfamily Dolichoderinae, which generally presents smaller chromosome numbers.
Dolichoderinae Iridomyrmex anceps 48 Indonesia, IMAI & al. (1985) Very different chromosome numbers have been published to this species; 2n = 18 in India (IMAI & al. 1984) and 2n = 48 in Indonesia (IMAI & al. 1985). Only the karyotype is available for the Indian specimens so that it is not possible to ascertain whether this variation is real or a mistake. In any case the 2n = 48 is not a usual chromosome number in the subfamily Dolichoderinae, which generally presents smaller chromosome numbers.
Dolichoderinae Iridomyrmex bicknelli (as Iridomyrmex gracilis) 9 18 Australia, CROZIER (1968a, K)
Dolichoderinae Iridomyrmex mattiroloi 9 18 Australia, CROZIER (1968a, K, M)
Dolichoderinae Iridomyrmex purpureus (as I. detectus) 9 18 Australia, CROZIER (1968a, K)(1968c, M, K) IMAI & al. (1977, K) In Australian populations CROZIER (1968a, 1968c) found two different karyotypes. In the Beaumaris sample n = 6M + 1SM + 2A and in the Euston population n = 6M + 3SM. IMAI & al. (1977) analysed other Australian populations and found also the presence of these two karyotypes.
Dolichoderinae Iridomyrmex sp. 18 Malaysia, GOÑI & al. (1982)
Dolichoderinae Iridomyrmex sp. (as ANIC-11) 9 18 Australia, CROZIER (1968a, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-12) 18 Australia, CROZIER (1968a, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-13) 18 Australia, IMAI & al. (1977, M, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-14) 18 Australia, IMAI & al. (1977, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-15) 18 Australia, IMAI & al. (1977, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-16) 18 Australia, IMAI & al. (1977, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-17) 18 Australia, IMAI & al. (1977, K)
Dolichoderinae Iridomyrmex sp. (as ANIC-5) 7 14 Australia, CROZIER (1968a, K) This is the unique species under the genus Iridomyrmex with a chromosome number different from n = 9. The haploid chromosome number in this species is n = 7 (CROZIER 1968a). CROZIER (1968a) suggested that according to its karyotype this species could be removed from the genus Iridomyrmex. In fact with the review of the genus Iridomyrmex carried out of SHATTUCK (1992), all species with a chromosome number different of n = 9 were transferred to other genera.
Dolichoderinae Iridomyrmex sp. (as ANIC-6) 9 18 Australia, CROZIER (1968a, K)
Formicinae Lasius alienus 28 Switzerland, HAUSCHTECK (1962, M) Two different chromosome numbers have been found in this species, n = 14 (HAUSCHTECK 1962) and n = 15 (HAUSCHTECK-JUNGEN & JUNGEN 1983). This is presumably an instance of Robertsonian polymorphism, since in the n = 14 karyotype a sub-metacentric chromosome is present that is absent in the n = 15 karyotype.
Formicinae Lasius alienus 30 Switzerland, Germany, Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983, K) Two different chromosome numbers have been found in this species, n = 14 (HAUSCHTECK 1962) and n = 15 (HAUSCHTECK-JUNGEN & JUNGEN 1983). This is presumably an instance of Robertsonian polymorphism, since in the n = 14 karyotype a sub-metacentric chromosome is present that is absent in the n = 15 karyotype.
Formicinae Lasius brunneus 15 Spain, LORITE & al. (1998a M, K), LORITE & al. (2002b) The standard chromosome number of this species is n = 15 (LORITE & al. 1998a) but a polymorphism has been reported due to the presence of B-chromosomes (LORITE & al. 2002b).
Formicinae Lasius emarginatus 30 Switzerland, HAUSCHTECK (1962, M)
Formicinae Lasius flavus 15 30 Switzerland, HAUSCHTECK (1962, M), HAUSCHTECK-JUNGEN & JUNGEN (1983, K)
Formicinae Lasius fuliginosus 14 28 Switzerland, Italy, HAUSCHTECK (1962, M), HAUSCHTECK-JUNGEN & JUNGEN (1983)
Formicinae Lasius nearcticus 30 USA, CROZIER (1970b, K)
Formicinae Lasius niger 30 Switzerland, HAUSCHTECK (1962, M), HAUSCHTECK (1963) The standard chromosome number of this species is n = 15, 2n = 30. In a Spanish population a polymorphism due to the presence of B-chromosomes was detected (PALOMEQUE & al. 1990c).
Formicinae Lasius niger 15 30 Japan, IMAI & YOSIDA (1964), IMAI (1966a, M), IMAI (1969, K), IMAI & KUBOTA (1972, K); Spain, PALOMEQUE & al. (1990b, M, K), PALOMEQUE & al. (1990c, M, K) The standard chromosome number of this species is n = 15, 2n = 30. In a Spanish population a polymorphism due to the presence of B-chromosomes was detected (PALOMEQUE & al. 1990c).
Formicinae Lasius pallitarsis 28 USA, HUNG (1969, M)
Formicinae Lasius sakagamii 15 Japan, YAMAUCHI & al. (2001, M)
Formicinae Lasius talpa 30 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969)
Formicinae Lasius umbratus 15 USA, HUNG (1969, M)
Formicinae Lasius umbratus 30 Switzerland, HAUSCHTECK (1962, M)
Formicinae Lepisiota capensis (as L. lunaria, Acantholepis lunaria, A. capensis) 18 India, IMAI & al. (1984, K)
Formicinae Lepisiota sp. 1 (as near L. sericea) 18 India, IMAI & al. (1984, K, as Acantholepis sp. 1, near sericea)
Formicinae Lepisiota sp. 2 (as near L. fergusoni) 18 India, IMAI & al. (1984, K, as Acantholepis sp. 2, near fergusoni)
Ponerinae Leptogenys borneensis 46 Malaysia, IMAI & al. (1983)
Ponerinae Leptogenys diminuta 38 Malaysia, GOÑI & al. (1982, as L. sp. 1), IMAI & al. (1983) Two different chromosome numbers have been reported in this species; 2n = 38 in Malaysian and Indian populations (GOÑI & al. 1982, IMAI & al. 1983, 1984) and 2n = 32 in Indonesian populations (IMAI & al. 1985). The karyotype has been published only for the 2n = 38 karyotype (IMAI & al. 1984), so that it is not possible to determinate their relation with the 2n = 32 karyotype.
Ponerinae Leptogenys diminuta 38 India, IMAI & al. (1984, K) Two different chromosome numbers have been reported in this species; 2n = 38 in Malaysian and Indian populations (GOÑI & al. 1982, IMAI & al. 1983, 1984) and 2n = 32 in Indonesian populations (IMAI & al. 1985). The karyotype has been published only for the 2n = 38 karyotype (IMAI & al. 1984), so that it is not possible to determinate their relation with the 2n = 32 karyotype.
Ponerinae Leptogenys diminuta 32 Indonesia, IMAI & al. (1985) Two different chromosome numbers have been reported in this species; 2n = 38 in Malaysian and Indian populations (GOÑI & al. 1982, IMAI & al. 1983, 1984) and 2n = 32 in Indonesian populations (IMAI & al. 1985). The karyotype has been published only for the 2n = 38 karyotype (IMAI & al. 1984), so that it is not possible to determinate their relation with the 2n = 32 karyotype.
Ponerinae Leptogenys hysterica 26 India, IMAI & al. 1984, K)
Ponerinae Leptogenys iridescens 46 Malaysia, IMAI & al. (1983)
Ponerinae Leptogenys iridescens 46 Indonesia, IMAI & al. (1985)
Ponerinae Leptogenys kraepelini 26 Indonesia, IMAI & al. (1985)
Ponerinae Leptogenys myops 24 48 Indonesia, IMAI & al. (1983), IMAI & al. (1985)
Ponerinae Leptogenys myops 48 Malaysia, GOÑI & al. (1982, as L. sp. 2); Sarawak, TJAN & al. (1986)
Ponerinae Leptogenys peuqueti 54 Indonesia, IMAI & al. (1985)
Ponerinae Leptogenys peuqueti (as L. minchinii) 52 India, IMAI & al. 1984, K)
Ponerinae Leptogenys processionalis (as L. ocellifera) 46 India, IMAI & al. (1984, K)
Ponerinae Leptogenys sp. 54 Sarawak, TJAN & al. (1986)
Ponerinae Leptogenys sp. 3 48 Malaysia, IMAI & al. (1983)
Ponerinae Leptogenys sp. 5 (as near L. peugueti) 15 30 India, IMAI & al. (1984, K)
Dolichoderinae Leptomyrmex erythrocephalus 12 Australia, IMAI & al. (1977, K)
Myrmicinae Leptothorax acervorum 13 26 Germany, Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983, K) In this species the standard karyotype is n = 13, although FISCHER (1987) found a polymorphism by a centric fission. These individuals have n = 14.
Myrmicinae Leptothorax acervorum 13 Germany, Switzerland, Sweden, France, Canada, FISCHER (1987, K); Canada, LOISELLE & al. (1990) In this species the standard karyotype is n = 13, although FISCHER (1987) found a polymorphism by a centric fission. These individuals have n = 14.
Myrmicinae Leptothorax crassipilis 17 USA, FRANCOEUR (1986), LOISELLE & al. (1990, M) The variation n = 17-18 (FRANCOEUR 1986, LOISELLE & al. 1990) is probably due to Robertsonian polymorphism.
Myrmicinae Leptothorax crassipilis 18 USA, FRANCOEUR (1986), LOISELLE & al. (1990, M) The variation n = 17-18 (FRANCOEUR 1986, LOISELLE & al. 1990) is probably due to Robertsonian polymorphism.
Myrmicinae Leptothorax faberi 15 Canada, BUSCHINGER (1982, K)
Myrmicinae Leptothorax faberi 15 Canada, FISCHER (1987, K)
Myrmicinae Leptothorax faberi 16 Canada, FISCHER (1987, K)
Myrmicinae Leptothorax goesswaldi (as Doronomyrmex goesswaldi) 28 Switzerland, France, FISCHER (1987, M)
Myrmicinae Leptothorax gredleri 11 Switzerland, Germany, BUSCHINGER & al. (1980), FISCHER (1987, K), LOISELLE & al. (1990)
Myrmicinae Leptothorax kutteri (as Doronomyrmex kutteri) 23 Sweden, DOUWES & BUSCHINGER (1983, M) The variation in the chromosome numbers (n = 23-25) found by BUSCHINGER & FISCHER (1991) has been explained as polymorphism by Robertsonian rearrangements.
Myrmicinae Leptothorax kutteri (as Doronomyrmex kutteri) 23 Sweden, Germany, Switzerland, BUSCHINGER & FISCHER (1991, M) The variation in the chromosome numbers (n = 23-25) found by BUSCHINGER & FISCHER (1991) has been explained as polymorphism by Robertsonian rearrangements.
Myrmicinae Leptothorax kutteri (as Doronomyrmex kutteri) 24 Sweden, Germany, Switzerland, BUSCHINGER & FISCHER (1991, M) The variation in the chromosome numbers (n = 23-25) found by BUSCHINGER & FISCHER (1991) has been explained as polymorphism by Robertsonian rearrangements.
Myrmicinae Leptothorax kutteri (as Doronomyrmex kutteri) 25 Sweden, Germany, Switzerland, BUSCHINGER & FISCHER (1991, M) The variation in the chromosome numbers (n = 23-25) found by BUSCHINGER & FISCHER (1991) has been explained as polymorphism by Robertsonian rearrangements.
Myrmicinae Leptothorax kutteri (as Doronomyrmex kutteri) 23 Sweden, Germany, Switzerland, France, Italy, FISCHER (1987, M) The variation in the chromosome numbers (n = 23-25) found by BUSCHINGER & FISCHER (1991) has been explained as polymorphism by Robertsonian rearrangements.
Myrmicinae Leptothorax kutteri (as Doronomyrmex kutteri) 25 Sweden, Germany, Switzerland, France, Italy, FISCHER (1987, M) The variation in the chromosome numbers (n = 23-25) found by BUSCHINGER & FISCHER (1991) has been explained as polymorphism by Robertsonian rearrangements.
Myrmicinae Leptothorax muscorum 17 BUSCHINGER & al. (1980) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 17 Germany, Canada, USA, FISCHER (1987, K) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 18 Germany, Canada, USA, FISCHER (1987, K) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 16 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 17 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 18 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 22 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 23 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 34 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 35 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 36 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax muscorum 44 Canada, USA, LOISELLE & al. (1990, M) A high variation in the chromosome numbers was found in this species with n = 16-23 (LOISELLE & al. 1990). In addition to this, some populations with the standard 17-18 chromosomes also present 4 to 7 B-chromosomes. LOISELLE & al. (1990) indicated that at least four species are under the taxon "muscorum".
Myrmicinae Leptothorax pacis (as Doronomyrmex pacis) 26 Switzerland, France, FISCHER (1987, M), BUSCHINGER & FISCHER (1991)
Myrmicinae Leptothorax pocahontas (as Doronomyrmex pocahontas) 18 Canada, FISCHER (1987, K), BUSCHINGER & HEINZE (1993)
Myrmicinae Leptothorax retractus 17 Canada, FRANCOEUR (1986), LOISELLE & al. (1990, M) The variation n = 17-18 (FRANCOEUR 1986, LOISELLE & al. 1990) was indicated as having been originated by Robertsonian rearrangements, although this is not clear. Nevertheless, there are some differences in the male genitalia of the two types of populations.
Myrmicinae Leptothorax retractus 18 Canada, FRANCOEUR (1986), LOISELLE & al. (1990, M) The variation n = 17-18 (FRANCOEUR 1986, LOISELLE & al. 1990) was indicated as having been originated by Robertsonian rearrangements, although this is not clear. Nevertheless, there are some differences in the male genitalia of the two types of populations.
Myrmicinae Leptothorax sp. 16 Japan, IMAI (1969)
Myrmicinae Leptothorax sp. 1 17 USA, FISCHER (1987)
Myrmicinae Leptothorax sp. 1 15 Canada, LOISELLE & al. (1990, M)
Myrmicinae Leptothorax sp. 1 16 Canada, LOISELLE & al. (1990, M)
Myrmicinae Leptothorax sp. 2 12 Algeria, FISCHER (1987, K)
Myrmicinae Leptothorax sp. 3 12 Italy, FISCHER (1987, K)
Myrmicinae Leptothorax sp. 4 13 Croatia, FISCHER (1987, K)
Myrmicinae Leptothorax sp. 5 14 Canada, FISCHER (1987, K)
Myrmicinae Leptothorax sp. 6 22 France, FISCHER (1987)
Myrmicinae Leptothorax sp. A 17 USA, LOISELLE & al. (1990, M)
Myrmicinae Leptothorax sphagnicola 13 Canada, FRANCOEUR (1986), FISCHER (1987, K), LOISELLE & al. (1990)
Myrmicinae Leptothorax spp. 21 France, FISCHER (1987, K)
Dolichoderinae Linepithema humile (as Iridomyrmex humilis) 8 16 Australia, CROZIER (1968a, K), CROZIER (1975, K); Spain, LORITE & al. (1996b, M, K), LORITE & al. (1998b, M, K)
Dolichoderinae Linepithema piliferum (as Iridomyrmex pilifer) 18 Peru, CROZIER (1970b, K)
Dolichoderinae Linepithema sp. 18 Peru, CROZIER (1970b, K, as Iridomyrmex sp. nr. pilifer)
Dorylinae Lioponera brevis 23 46 Australia, IMAI & al. (1977, K)
Myrmicinae Lophomyrmex bedoti 38 Malaysia, IMAI & al. (1983); India, IMAI & al. (1984)
Myrmicinae Lophomyrmex sp. 38 Sarawak, TJAN & al. (1986)
Myrmicinae Lordomyrma sp. 1 11 22 Malaysia, IMAI & al. (1983)
Myrmicinae Manica rubida (as Myrmica rubida) 44 Switzerland, HAUSCHTECK (1965), HAUSCHTECK-JUNGEN & JUNGEN (1983, M)
Myrmicinae Mayriella abstinens 18 Australia, IMAI & al. (1977, K)
Myrmicinae Meranoplus bicolor 16 India, IMAI & al. (1984, K); Indonesia, IMAI & al. (1985)
Myrmicinae Meranoplus minor 22 Australia, IMAI & al. (1977, K)
Myrmicinae Meranoplus sp. (as ANIC-4) 22 Australia, IMAI & al. (1977, K)
Myrmicinae Meranoplus sp. (as ANIC-5) 22 Australia, IMAI & al. (1977, K)
Myrmicinae Meranoplus sp. (as M. hirsutus group) 22 Australia, CROZIER (1970b, K)
Myrmicinae Meranoplus sp. (as M. oceanicus group) 10 Australia, CROZIER (1966)
Myrmicinae Messor aciculatus 22 44 Japan, IMAI & YOSIDA (1964), IMAI (1966a, M), IMAI (1969, K)
Myrmicinae Messor barbarus 21 HAUSCHTECK-JUNGEN (In CROZIER 1975); Spain, LORITE & al. (2002, M, K)
Myrmicinae Messor sp. 41 India, IMAI & al. (1984, K)
Myrmicinae Monomorium dichroum 16 India, IMAI & al. (1984, K)
Myrmicinae Monomorium indicum 21 India, IMAI & al. (1984, K) The variation 2n = 21-22 (IMAI & al. 1984) is due to a reciprocal translocation polymorphism. The 2n = 22 seems to be the standard karyotype, since it is homomorphic and there are several heteromorphic karyotypes with 2n = 21. This polymorphism has generated the presence of individuals with partial monosomy, trisomy and even tetrasomy.
Myrmicinae Monomorium indicum 22 India, IMAI & al. (1984, K) The variation 2n = 21-22 (IMAI & al. 1984) is due to a reciprocal translocation polymorphism. The 2n = 22 seems to be the standard karyotype, since it is homomorphic and there are several heteromorphic karyotypes with 2n = 21. This polymorphism has generated the presence of individuals with partial monosomy, trisomy and even tetrasomy.
Myrmicinae Monomorium latinode 70 India, IMAI & al. (1984, K)
Myrmicinae Monomorium minimum 22 USA, CROZIER (1970b, K)
Myrmicinae Monomorium orientale 20 India, IMAI & al. (1984, K)
Myrmicinae Monomorium pharaonis 11 22 USA, SMITH & PEACOCK (1957, M)
Myrmicinae Monomorium pharaonis 11 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969, K)
Myrmicinae Monomorium rothsteini (as Chelaner rothsteini) 22 Australia, IMAI & al. (1977, K)
Myrmicinae Monomorium sp. 32 Australia, IMAI & al. (1977, K, as Chelaner sp., ANIC-1)
Myrmicinae Monomorium sp. 22 Australia, IMAI & al. (1977, K, as Chelaner sp., ANIC-2)
Myrmicinae Monomorium sp. (as ANIC-1) 22 Australia, IMAI & al. (1977, K)
Myrmicinae Monomorium sp. (as ANIC-2) 42 Australia, IMAI & al. (1977, K)
Myrmicinae Monomorium sp. 1 22 Malaysia, GOÑI & al. (1982)
Myrmicinae Monomorium sp. 1 22 Indonesia, IMAI & al. (1985)
Myrmicinae Monomorium sp. 2 11 22 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Myrmicinae Monomorium sp. 2 22 Indonesia, IMAI & al. (1985)
Myrmicinae Monomorium sp. 3 11 22 Malaysia, IMAI & al. (1983)
Myrmicinae Monomorium sp. 4 11 Malaysia, IMAI & al. (1983)
Myrmicinae Monomorium sp. 5 34 India, IMAI & al. (1984, K)
Myrmicinae Monomorium sp. 6 (as near M. glabrum) 38 India, IMAI & al. (1984, K)
Myrmicinae Monomorium subopacum 34 Spain, LORITE & al. (2002b, M, K), LORITE & al. (2004b, M)
Myrmicinae Monomorium viridum 22 USA, CROZIER (1970b, K)
Myrmicinae Monomorium whitei (as Chelaner whitei) 24 Australia, IMAI & al. (1977, K)
Myrmicinae Mycetophylax conformis 30 Brazil, Cardoso et al. (2014)
Myrmicinae Mycetophylax morschi 26 Brazil, Cardoso et al. (2014)
Myrmicinae Mycetophylax morschi 30 Brazil, Cardoso et al. (2014)
Myrmicinae Mycetophylax simplex 36 Brazil, Cardoso et al. (2014)
Myrmicinae Mycocepurus sp. 8 Panama, MURAKAMI & al. (1998, K)
Myrmeciinae "Myrmecia banksi" 9 Australia, IMAI & al. (1994, K).
Myrmeciinae

"Myrmecia banksi"

10 Australia, IMAI & al. (1994, K).
Myrmeciinae "Myrmecia banksi" 10 Australia, HIRAI & al. (1994, M, K), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia brevinoda 84 Australia, IMAI & al. (1977, M. K)
Myrmeciinae Myrmecia cephalotes 66 Australia, IMAI & al. (1977, K)
Myrmeciinae Myrmecia cf. arnoldi 53 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. arnoldi 55 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. arnoldi 57 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. arnoldi 59 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. arnoldi 60 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. arnoldi 64 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. arnoldi 66 Australia, MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia cf. fulvipes 12 Australia, IMAI & al. (1977)
Myrmeciinae Myrmecia chasei 47 Australia, MEYNE & al. (1995, M), HIRAI & al. (1996)
Myrmeciinae Myrmecia croslandi 1 2 Australia, Taylor (1991), IMAI & al. (1992, M, 1994, K), MEYNE & al. (1995, M), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia croslandi 2 4 Australia, Taylor (1991), IMAI & al. (1992, M, 1994, K), MEYNE & al. (1995, M), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia forficata 50 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia forficata 51 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia forficata 52 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia forficata 54 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia fulvipes 6 12 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996)
Myrmeciinae Myrmecia fulvipes 6 48 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996)
Myrmeciinae Myrmecia fulvipes 6 50 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996)
Myrmeciinae Myrmecia fulvipes 6 60 Australia, IMAI & al. (1977, K), MEYNE & al. (1995), HIRAI & al. (1996)
Myrmeciinae Myrmecia gulosa 38 Australia, IMAI & al. (1977, K), MEYNE & al. (1995, M), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia haskinsorum 12 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia haskinsorum 24 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia imaii 6 Australia, IMAI & al. (1994, K), HIRAI & al. (1994, M, K), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia imaii 7 Australia, IMAI & al. (1994, K), HIRAI & al. (1994, M, K), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia imaii 8 Australia, IMAI & al. (1994, K), HIRAI & al. (1994, M, K), HIRAI & al. (1996, M)
Myrmeciinae Myrmecia mandibularis 28 56 Australia, HIRAI & al. (1996, M)
Myrmeciinae Myrmecia mandibularis 29 56 Australia, HIRAI & al. (1996, M)
Myrmeciinae Myrmecia michaelseni 27 Australia, HIRAI & al. (1996)
Myrmeciinae Myrmecia nigrocincta 22 Australia, IMAI & al. (1977, K)
Myrmeciinae Myrmecia occidentalis 64 Australia, HIRAI & al. (1996, M)
Myrmeciinae Myrmecia pavida 44 Australia, HIRAI & al. (1996, M)
Myrmeciinae Myrmecia piliventris 2 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia piliventris 3 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia piliventris 4 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia piliventris 4 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia piliventris 6 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia piliventris 34 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia piliventris 64 Australia, IMAI & TAYLOR (1986, K), IMAI & al. (1988a, K)
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 15 Australia, CROZIER (1966) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 9 Australia, IMAI & al. (1977, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 10 Australia, IMAI & al. (1977, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 30 Australia, IMAI & al. (1977, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 31 Australia, IMAI & al. (1977, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 1 2 Australia, CROSLAND & CROZIER (1986, M) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 2 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 9 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6- 8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 10 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 18 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 19 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 20 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 21 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 22 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).

Myrmeciinae

Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 23 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 24 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 25 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 26 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 27 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 30 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 31 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 32 Australia, CROSLAND & al. (1988) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).

Myrmeciinae

Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 1 2 Australia, IMAI & al. (1988a, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 24 Australia, IMAI & al. (1988a, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 25 Australia, IMAI & al. (1988a, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 26 Australia, IMAI & al. (1988a, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).

Myrmeciinae

Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 31 Australia, IMAI & al. (1988a, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 32 Australia, IMAI & al. (1988a, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 2 Australia, IMAI & al. (1988b, K); Australia, IMAI & TAYLOR (1989, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 3 Australia, IMAI & al. (1988b, K); Australia, IMAI & TAYLOR (1989, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12- 24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as complex) (as M. ruginoda, Ponera ruginosa) 4 Australia, IMAI & al. (1988b, K); Australia, IMAI & TAYLOR (1989, M, K) In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 18 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 19 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 20 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 21 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 22 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 23 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 24 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 25 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 26 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 27 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 28 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 29 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 30 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 31 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pilosula (as s.st.) 32 Australia, IMAI & al. (1994, K), MEYNE & al. (1995, M), HIRAI & al. (1994, M, K), HIRAI & al. (1996, In this taxon, as in other Myrmecia species, the chromosome number frequently varies. Generally these variations are due to Robertsonian polymorphisms of centric fusion-fission, although other types of polymorphisms have been detected, such as pericentromeric inversions, translocations, deletions or heterochromatin growth (IMAI & al. 1988). In the taxon Myrmecia pilosula the haploid chromosome number found ranges between n = 1 to 2n = 32 (CROSLAND & CROZIER 1986, IMAI & al. 1977, 1988, IMAI & TAYLOR 1989). This taxon has been considered a complex of morphologically similar species. IMAI & al. (1994) defined 5 different species in this complex according to their karyotypes: M. croslandi (n = 1, 2n = 2-4), M. imaii (2n = 6-8), M. banksi (2n = 9-10), M. haskinsorum (2n = 12-24), and M. pilosula s.st. (2n = 18-32).
Myrmeciinae Myrmecia pyriformis 41 81 Australia, IMAI & al. (1977, K)
Myrmeciinae Myrmecia simillima 70 Australia, HIRAI & al. (1996, M)
Myrmeciinae Myrmecia sp. 2 68 Indonesia, IMAI & al. (1995)
Myrmeciinae Myrmecia tepperi 70 BROWING (1987, in IMAI & al. 1990).
Myrmeciinae Myrmecia vindex 74 Australia, HIRAI & al. (1996)
Myrmeciinae Myrmecia vindex 76 Australia, HIRAI & al. (1996)
Myrmicinae Myrmecina americana 14 HAUSCHTECK-JUNGEN (In CROZIER, 1975)
Myrmicinae Myrmecina graminicola 14 HAUSCHTECK-JUNGEN (In CROZIER 1975)
Myrmicinae Myrmecina sp. 1 66 Indonesia, IMAI & al. (1985)
Myrmicinae Myrmica lobicornis 24 HAUSCHTECK (1965), HAUSCHTECK-JUNGEN & JUNGEN (1983)
Myrmicinae Myrmica rubra 23 46 Japan, IMAI (1969) The chromosome number found for this species is 2n = 46. The populations analysed were collected in Switzerland and Japan (HAUSCHTECK 1965, IMAI 1969). Later HAUSCHTECK-JUNGEN & JUNGEN (1983) reported a 2n = 48 for Swiss populations of Myrmica laevinodis. Despite these differences, M. laevinodis is currently considered to be a synonym of M. rubra (BOLTON & al. 2007).
Myrmicinae Myrmica rubra 48 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983, M) The chromosome number found for this species is 2n = 46. The populations analysed were collected in Switzerland and Japan (HAUSCHTECK 1965, IMAI 1969). Later HAUSCHTECK-JUNGEN & JUNGEN (1983) reported a 2n = 48 for Swiss populations of Myrmica laevinodis. Despite these differences, M. laevinodis is currently considered to be a synonym of M. rubra (BOLTON & al. 2007).
Myrmicinae Myrmica ruginodis 24 48 Switzerland, HAUSCHTECK (1965), HAUSCHTECK-JUNGEN & JUNGEN (1983, M)
Myrmicinae Myrmica sabuleti 23 46 Switzerland, HAUSCHTECK (1965), HAUSCHTECK-JUNGEN & JUNGEN (1983)
Myrmicinae Myrmica scabrinodis 22 44 Switzerland, HAUSCHTECK (1965)
Myrmicinae Myrmica schencki 23 46 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983, M)
Myrmicinae Myrmica sulcinodis 28 HAUSCHTECK-JUNGEN (In CROZIER 1975)

The first chromosome number given for this species was n = 24 (HAUSCHTECK-JUNGEN in CROZIER 1975), but this is probably a mistake. In HAUSCHTECK (1965) and HAUSCHTECK-JUNGEN & JUNGEN (1983) metaphase plates are presented and the haploid chromosome number is n = 28.

Myrmicinae Myrmica sulcinodis 28 56 Switzerland, HAUSCHTECK (1965, M), HAUSCHTECK-JUNGEN & JUNGEN (1983, M) The first chromosome number given for this species was n = 24 (HAUSCHTECK-JUNGEN in CROZIER 1975), but this is probably a mistake. In HAUSCHTECK (1965) and HAUSCHTECK-JUNGEN & JUNGEN (1983) metaphase plates are presented and the haploid chromosome number is n = 28.
Myrmicinae Myrmicaria brunnea 44 India, IMAI & al. (1984, K)
Myrmicinae Myrmicaria sp. 44 Indonesia, IMAI & al. (1985)
Myrmicinae Myrmicaria sp. 1 44 Malaysia, GOÑI & al. (1982)
Myrmicinae Myrmicaria sp. 2 44 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Myrmicinae Myrmicaria sp. 3 44 Malaysia, GOÑI & al. (1982)
Myrmicinae Myrmicaria sp. 4 23 46 Malaysia, IMAI & al. (1983)
Myrmicinae Myrmicocrypta sp. 30 French Guiana, Mariano et al., 2011 Karyotype formula: 6M + 10SM + 14A
Amblyoponinae Mystrium camillae 32 Sarawak, TJAN & al. (1986)
Dorylinae Neivamyrmex texanus 36 USA, TABER & COKENDOLPHER (1988, K)
Myrmeciinae Nothomyrmecia macrops 94 Australia, IMAI & al. (1990, K)
Formicinae Notoncus ectatommoides 22 44 Australia, IMAI & al. (1977, K)
Formicinae Nylanderia indica (as Paratrechina indica) 30 India, IMAI & al. (1984, K )
Formicinae Nylanderia parvula (as Paratrechina parvula) 15 HAUSCHTECK-JUNGEN (in CROZIER 1975)
Formicinae Nylanderia sp. (as Paratrechina sp. 3 near P. yerbuyi) 15 30 India, IMAI & al. (1984, K)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. ANIC-1) 30 Australia, IMAI & al. (1977, K)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 1) 16 Malaysia, GOÑI & al. (1982)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 2) 26 Malaysia, GOÑI & al. (1982)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 2) 30 Indonesia, IMAI & al. (1985)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 3) 28 Malaysia, GOÑI & al. (1982)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 3) 30 Indonesia, IMAI & al. (1985)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 4) 8 16 GOÑI & al. (1982), IMAI & al. (1983)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 5) 28 Malaysia, GOÑI & al. (1982)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 6) 30 Malaysia, IMAI & al. (1983)
Formicinae Nylanderia or Paraparatrechina (as Paratrechina sp. 7) 16 Malaysia, IMAI & al. (1983)
Dolichoderinae Ochetellus glaber (as O. itoi, Iridomyrmex glaber, I. itoi) 14 28 Australia, CROZIER (1968a, K); Japan, IMAI & YOSIDA (1964), IMAI (1969, K)
Ponerinae Odontomachus hastatus 44 French Guiana, Mariano et al., 2011 Karyotype formula: 4SM + 2ST + 38T
Ponerinae Odontomachus latidens 15 Malaysia, IMAI & al. (1983) Two different chromosome numbers have been reported for this species, n = 15 in Malaysian populations (IMAI & al. 1983) and 2n = 32 in Indonesian populations (IMAI & al. 1985). No karyotypes of metaphase plates have been published.
Ponerinae Odontomachus latidens 32 Indonesia, IMAI & al. (1985) Two different chromosome numbers have been reported for this species, n = 15 in Malaysian populations (IMAI & al. 1983) and 2n = 32 in Indonesian populations (IMAI & al. 1985). No karyotypes of metaphase plates have been published.
Ponerinae Odontomachus rixosus 15 30 Malaysia, GOÑI & al. (1982, as O. sp. 2), IMAI & al. (1983) The standard karyotype is 2n = 30 and the variation in the chromosome number in this species is due to the presence of B-chromosomes (GOÑI & al. 1982, IMAI & al. 1985, 1983).
Ponerinae Odontomachus scalptus 44 French Guiana, Mariano et al., 2011 Karyotype formula: 2SM + 16ST + 26T
Ponerinae Odontomachus simillimus 22 44 Malaysia, GOÑI & al. (1982, as O. sp. 1), IMAI & al. (1983); Indonesia, IMAI & al. (1985)
Ponerinae Odontomachus simillimus 44 Sarawak, TJAN & al. (1986)
Ponerinae Odontomachus sp. (as ANIC-1) 44 Australia, IMAI & al. (1977, K)
Ponerinae Odontomachus sp. 3 22 44 Malaysia, GOÑI & al. (1982)
Ponerinae Odontoponera transversa 46 India, IMAI & al. (1984, K) Indian populations were found to have 2n = 46 (IMAI & al. 1984) and Indonesian populations 2n = 42 (IMAI & al. 1985). It is not possible to compare them, since the karyotype has been published only for the Indian populations.
Ponerinae Odontoponera transversa 42 Indonesia, IMAI & al. (1985) Indian populations were found to have 2n = 46 (IMAI & al. 1984) and Indonesian populations 2n = 42 (IMAI & al. 1985). It is not possible to compare them, since the karyotype has been published only for the Indian populations.
Formicinae Oecophylla longinoda 12 LEDOUX (1954, in CROZIER 1970b)
Formicinae Oecophylla smaragdina 8 16 Malaysia, CROZIER (1970b, K)
Formicinae Oecophylla smaragdina 16 India, IMAI & al. (1984, K)
Dorylinae Ooceraea biroi 28 India, IMAI & al. (1984, K)
Formicinae Opisthopsis rufithorax 50 Australia, IMAI & al. (1977, K)
Myrmicinae Orectognathus clarki 30 Australia, CROZIER (1968d, M, K)
Myrmicinae Orectognathus darlingtoni 11 22 Australia, IMAI & al. (1977, K)
Myrmicinae Orectognathus versicolor 11 22 Australia, IMAI & al. (1977, K)
Ponerinae Pachycondyla "subversa" 26 Brazil, MARIANO & al. (2007)
Ponerinae Pachycondyla "subversa" 28 Brazil, MARIANO & al. (2007)
Ponerinae Rasopone arhuaca 12 Brazil, MARIANO & al. (2007)
Ponerinae Brachyponera chinensis (as Brachyponera chinensis) 22 Japan, IMAI & KUBOTA (1972, K)
Ponerinae Mayaponera constricta 30 Brazil, MARIANO & al. (2007)
Ponerinae Pachycondyla crassinoda 62 Brazil, MARIANO & al. (2006c, M), MARIANO & al. (2007)
Ponerinae Pseudoponera gilberti 14 Brazil, MARIANO & al. (2007)
Ponerinae Neoponera apicalis 36 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) The variable number of chromosomes (2n = 36 to 2n = 68) has been explained by the possible existence of several species under the taxon "apicalis" (DELABIE & al. 2008).
Ponerinae Neoponera apicalis 40 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) The variable number of chromosomes (2n = 36 to 2n = 68) has been explained by the possible existence of several species under the taxon "apicalis" (DELABIE & al. 2008).
Ponerinae Neoponera apicalis 68 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) The variable number of chromosomes (2n = 36 to 2n = 68) has been explained by the possible existence of several species under the taxon "apicalis" (DELABIE & al. 2008).
Ponerinae Neoponera carinulata 24 Brazil, MARIANO & al. (2007)
Ponerinae Neoponera crenata 26 Brazil, MARIANO & al. (2006a, M), MARIANO & al. (2007)
Ponerinae Neoponera goeldii 24 French Guyana, MARIANO & al. (2007)
Ponerinae Pachycondyla harpax 90 Brazil, Mera Velsaco et al. (2014)
Ponerinae Pachycondyla harpax 92 Brazil, Mera Velsaco et al. (2014)
Ponerinae Pachycondyla harpax 96 Brazil, MARIANO & al. (2006c, M), MARIANO & al. (2007)
Ponerinae Neoponera inversa 30 Brazil, MARIANO & al. (1999), MARIANO & al. (2007)
Ponerinae Neoponera marginata 46 Brazil, MARIANO & al. (2007)
Ponerinae Neoponera metanotalis 13 36 Brazil, MARIANO & al. (2006a, M), MARIANO & al. (2007)
Ponerinae Bothroponera rubiginosa 76 India, IMAI & al. (1984, K)
Ponerinae Mesoponera rubra 38 Malaysia, IMAI & al. (1983) GOÑI & al. (1983) explained the variable chromosome number of 2n = 38, 40 as the presence of Robertsonian polymorphisms, but neither metaphase plates nor karyotypes were presented.
Ponerinae Mesoponera rubra 40 Malaysia, IMAI & al. (1983) GOÑI & al. (1983) explained the variable chromosome number of 2n = 38, 40 as the presence of Robertsonian polymorphisms, but neither metaphase plates nor karyotypes were presented.
Ponerinae Mesoponera rubra 10 20 Indonesia, IMAI & al. (1985) GOÑI & al. (1983) explained the variable chromosome number of 2n = 38, 40 as the presence of Robertsonian polymorphisms, but neither metaphase plates nor karyotypes were presented.
Ponerinae Mesoponera rubra 20 Sarawak, TJAN & al. (1986) GOÑI & al. (1983) explained the variable chromosome number of 2n = 38, 40 as the presence of Robertsonian polymorphisms, but neither metaphase plates nor karyotypes were presented.
Ponerinae Brachyponera sp. 22 Malaysia, GOÑI & al. (1982)
Ponerinae Ectomomyrmex sp. 38 India, IMAI & al. (1984, K)
Ponerinae Bothroponera sp. (ANIC-2) 60 Australia, IMAI & al. (1977, K)
Ponerinae Pachycondyla sp. 11 22 Malaysia, GOÑI & al. (1982)
Ponerinae Pachycondyla sp. 18 36 Malaysia, IMAI & al. (1983)
Ponerinae Brachyponera sp. (as near Pachycondyla obscurans) 44 Indonesia, IMAI & al. (1985)
Ponerinae Neoponera sp. (as N. venusta gr.) 54 Brazil, MARIANO & al. (2007)
Ponerinae Pachycondyla sp. 1 28 Malaysia, GOÑI & al. (1982, as Mesoponera sp. 1)
Ponerinae Bothroponera sp. 1, near tesserinoda 48 India, IMAI & al. (1984, K)
Ponerinae Pachycondyla sp. 2 22 Malaysia, GOÑI & al. (1982, as Mesoponera sp. 2)
Ponerinae Bothroponera sp. 2, near P. tesserinoda 52 India, IMAI & al. (1984, K)
Ponerinae Pachycondyla sp. 3 36 Malaysia, GOÑI & al. (1982, as Mesoponera sp. 3)
Ponerinae Pseudoponera stigma 12 Brazil, MARIANO & al. (2007)
Ponerinae Pachycondyla striata 104 Brazil, MARIANO & al. (2007)
Ponerinae Neoponera unidentata 12 Brazil, MARIANO & al. (2007)
Ponerinae Neoponera venusta 48 Brazil, MARIANO & al. (2007)
Ponerinae Neoponera verenae 42 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) Probably several sibling species are under this taxon (DELABIE & al. 2008) as happen with P. apicalis (see note).
Ponerinae Neoponera verenae 58 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) Probably several sibling species are under this taxon (DELABIE & al. 2008) as happen with P. apicalis (see note).
Ponerinae Neoponera verenae 59 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) Probably several sibling species are under this taxon (DELABIE & al. 2008) as happen with P. apicalis (see note).
Ponerinae Neoponera verenae 60 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) Probably several sibling species are under this taxon (DELABIE & al. 2008) as happen with P. apicalis (see note).
Ponerinae Neoponera verenae 62 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) Probably several sibling species are under this taxon (DELABIE & al. 2008) as happen with P. apicalis (see note).
Ponerinae Neoponera verenae 64 Brazil, MARIANO & al. (2007), DELABIE & al. (2008, M, K) Probably several sibling species are under this taxon (DELABIE & al. 2008) as happen with P. apicalis (see note).
Ponerinae Neoponera villosa 34 Brazil, MARIANO & al. (1999), MARIANO & al. (2007)
Dolichoderinae Papyrius nitidus (as Iridomyrmex nitidus) 8 16 Australia, CROZIER (1968a, K), IMAI & al. (1977, K)
Formicinae Paratrechina longicornis 16 Taiwan, HUNG & al. (1972) In IMAI et al. (1985) give n = 16, but this may be a mistake since in another two publications n = 8 appears and the karyotype is presented in one of the studies (HUNG & al. 1972, IMAI & al. 1984).
Formicinae Paratrechina longicornis 8 16 India, IMAI & al. (1984, K) In IMAI et al. (1985) give n = 16, but this may be a mistake since in another two publications n = 8 appears and the karyotype is presented in one of the studies (HUNG & al. 1972, IMAI & al. 1984).
Formicinae Paratrechina longicornis 16 Indonesia, IMAI & al. (1985) In IMAI et al. (1985) give n = 16, but this may be a mistake since in another two publications n = 8 appears and the karyotype is presented in one of the studies (HUNG & al. 1972, IMAI & al. 1984).
Myrmicinae Pheidole binghamii 20 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole capellinii 20 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole dentata 20 USA, CROZIER (1970b, K)
Myrmicinae Pheidole dentigula 20 USA, CROZIER (1970b, K)
Myrmicinae Pheidole desertorum 20 USA, TABER & COKENDOLPHER (1988, K)
Myrmicinae Pheidole fallax 10 20 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Pheidole fervida 10 20 Japan, IMAI & YOSIDA (1964), IMAI (1966a, M), IMAI (1969)
Myrmicinae Pheidole hortensis 20 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole hyatti 20 USA, TABER & COKENDOLPHER (1988, K)
Myrmicinae Pheidole indica (as P. rotschana) 20 India, IMAI & al. (1984, K, as P. indica)
Myrmicinae Pheidole indica (as P. rotschana) 20 India, IMAI & al. (1984, K, as P. rotschana)
Myrmicinae Pheidole latinoda 42 India, IMAI & al. (1984, K)
Myrmicinae Pheidole megacephala 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole mus 12 India, IMAI & al. (1984, K)
Myrmicinae Pheidole nitidula (as P. strobeli) 20 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Pheidole nodus 17 CROZIER (1975, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 18 CROZIER (1975, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 19 CROZIER (1975, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 20 CROZIER (1975, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 19 38 Japan, IMAI (1969) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 17 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 18 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 19 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 20 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 37 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 38 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole nodus 39 Japan, IMAI & KUBOTA (1972, K) In a Japanese population, IMAI (1969) found n = 19, 2n = 38. The analysis of new populations showed a variable chromosome number of n = 17-20, 2n = 37-39. This polymorphism is due to fusion and fission processes (IMAI & KUBOTA 1975).
Myrmicinae Pheidole pallidula 24 Switzerland, HAUSCHTECK (1961, M) Earlier, n = 12 was reported for this species in Swiss populations (HAUSCHTECK 1961). Later, in populations collected in Switzerland, Greece, Tunisia and Spain, an n = 10 was found (HAUSCHTECK-JUNGEN & JUNGEN 1983, PALOMEQUE & al. 1987). HAUSCHTECK-JUNGEN & JUNGEN (1983) explains this difference as a consequence of a Robertsonian polymorphism. Also, numerical variations have been found in the chromosome numbers of this species due to the presence of a B-chromosome (LORITE & al. 2000) and a polymorphism due to a pericentromeric inversion (this paper).
Myrmicinae Pheidole pallidula 10 20 Switzerland, Spain, Greece, Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983, K); Spain, PALOMEQUE & al. (1987, M, K), PALOMEQUE & al. (1990b, M, K), LORITE & al. (2000, M. K) Earlier, n = 12 was reported for this species in Swiss populations (HAUSCHTECK 1961). Later, in populations collected in Switzerland, Greece, Tunisia and Spain, an n = 10 was found (HAUSCHTECK-JUNGEN & JUNGEN 1983, PALOMEQUE & al. 1987). HAUSCHTECK-JUNGEN & JUNGEN (1983) explains this difference as a consequence of a Robertsonian polymorphism. Also, numerical variations have been found in the chromosome numbers of this species due to the presence of a B-chromosome (LORITE & al. 2000) and a polymorphism due to a pericentromeric inversion (this paper).
Myrmicinae Pheidole plagiaria 20 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole porcula 20 USA, TABER & COKENDOLPHER (1988, K)
Myrmicinae Pheidole soritis (as P. sitarches) 18 USA, TABER & COKENDOLPHER (1988, K)
Myrmicinae Pheidole sp. 10 Japan, IMAI (1969)
Myrmicinae Pheidole sp. (as ANIC-20) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-21) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-22) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-23) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-24) 18 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-25) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-26) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-27) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-28) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-29) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-30) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-31) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as ANIC-32) 20 Australia, IMAI & al. (1977, K)
Myrmicinae Pheidole sp. (as P. concentrica group) 9 Australia, CROZIER (1966)
Myrmicinae Pheidole sp. 1 10 20 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Myrmicinae Pheidole sp. 1 10 20 Sarawak, TJAN & al. (1986)
Myrmicinae Pheidole sp. 1 (as near P. grayi) 42 India, IMAI & al. (1984, K)
Myrmicinae Pheidole sp. 10 20 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 11 22 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 11 20 India, IMAI & al. (1984)
Myrmicinae Pheidole sp. 12 10 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 13 38 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 13 (as near P. watsoni) 28 India, IMAI & al. (1984, K)
Myrmicinae Pheidole sp. 14 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 14 18 India, IMAI & al. (1984, K)
Myrmicinae Pheidole sp. 15 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 16 9 18 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 17 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 17 21 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 18 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 19 20 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 2 10 20 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 2 18 Sarawak, TJAN & al. (1986)
Myrmicinae Pheidole sp. 20 18 36 Malaysia, IMAI & al. (1983)
Myrmicinae Pheidole sp. 3 20 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 3 20 India, IMAI & al. (1984, K)
Myrmicinae Pheidole sp. 3 9 18 Sarawak, TJAN & al. (1986)
Myrmicinae Pheidole sp. 4 20 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 4 20 India, IMAI & al. (1984)
Myrmicinae Pheidole sp. 4 18 Sarawak, TJAN & al. (1986)
Myrmicinae Pheidole sp. 5 16 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 5 17 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 5 30 India, IMAI & al. (1984, K)
Myrmicinae Pheidole sp. 5 18 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole sp. 6 20 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 6 18 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole sp. 7 16 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Myrmicinae Pheidole sp. 7 18 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole sp. 8 38 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 8 20 India, IMAI & al. (1984, K)
Myrmicinae Pheidole sp. 8 32 Indonesia, IMAI & al. (1985)
Myrmicinae Pheidole sp. 9 18 Malaysia, GOÑI & al. (1982)
Myrmicinae Pheidole sp. 9 (as near P. fossulata) 20 India, IMAI & al. (1984, K)
Myrmicinae Pheidole spininodis 20 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Pheidole subarmata (as P. cornutula) 20 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Pheidole tepicana 18 USA, TABER & COKENDOLPHER (1988)
Myrmicinae Pheidole woodmasoni 18 India, IMAI & al. (1984, K)
Dolichoderinae Philidris cordata (as Iridomyrmex cordatus) 16 Malaysia, IMAI & al. (1983); Sarawak, TJAN & al. (1986)
Formicinae Plagiolepis pygmaea 9 18 Spain, Switzerland, Croatia, HAUSCHTECK-JUNGEN & JUNGEN (1983, K); Spain, PALOMEQUE & al. (1993a, M, K) The standard karyotype formula of this species is n = 7M + 1SM + 1ST. However, one population had a polymorphism due to the presence of a supernumerary chromosome segment in the long arm of a metacentric chromosome (PALOMEQUE & al. 1993a). The presence of the segment changed the chromosome morphology to submetacentric.
Formicinae Plagiolepis schmitzii (as P. barbara) 9 18 Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983, K); Spain, PALOMEQUE & al. (1990b, M, K), PALOMEQUE & al. (1993a, M, K) A polymorphism similar to the one described in Plagiolepis pygmaea (see note) has been described in this species (PALOMEQUE & al. 1993a).
Formicinae Plagiolepis sp. 18 Indonesia, IMAI & al. (1985)
Formicinae Plagiolepis sp. 18 Malaysia, IMAI & al. (1983)
Ponerinae Platythyrea pilosula 40 Mariano et al. (2015)
Ponerinae Platythyrea punctata 84 Schilder (1999)
Ponerinae Platythyrea quadridenta 9 18 Malaysia, IMAI & al. (1983)
Ponerinae Platythyrea sinuata 44 Silva-Rocha et al. (2017)
Ponerinae Platythyrea tricuspidata 92 Malaysia, IMAI & al. (1983) In IMAI & al. (1983) a 2n = 96 was reported but later the authors indicated that the real chromosome number of this species is 2n = 92-94 (IMAI & al. 1990).
Ponerinae Platythyrea tricuspidata 93 Malaysia, IMAI & al. (1983) In IMAI & al. (1983) a 2n = 96 was reported but later the authors indicated that the real chromosome number of this species is 2n = 92-94 (IMAI & al. 1990).
Ponerinae Platythyrea tricuspidata 94 Malaysia, IMAI & al. (1983) In IMAI & al. (1983) a 2n = 96 was reported but later the authors indicated that the real chromosome number of this species is 2n = 92-94 (IMAI & al. 1990).
Myrmicinae Podomyrma adelaidae 49 Australia, IMAI & al. (1977, K) While 2n = 44, 49-51 was reported (IMAI & al. 1977), the standard karyotype is 2n = 44. The other karyotypes seem to be due to the presence of B-chromosomes.
Myrmicinae Podomyrma adelaidae 50 Australia, IMAI & al. (1977, K) While 2n = 44, 49-51 was reported (IMAI & al. 1977), the standard karyotype is 2n = 44. The other karyotypes seem to be due to the presence of B-chromosomes.
Myrmicinae Podomyrma adelaidae 51 Australia, IMAI & al. (1977, K) While 2n = 44, 49-51 was reported (IMAI & al. 1977), the standard karyotype is 2n = 44. The other karyotypes seem to be due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex apache 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex badius 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex barbatus 16 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex brevispinosus 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex californicus (as P. estebanius) 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex comanche 16 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex desertorum 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex huachucanus 36 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex imberbiculus 30 USA, TABER & al. (1988, K) The authors (TABER & al. 1988) indicated that the variation in the chromosome number n = 30, 2n = 60-62 was due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex imberbiculus 58 USA, TABER & al. (1988, K) The authors (TABER & al. 1988) indicated that the variation in the chromosome number n = 30, 2n = 60-62 was due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex imberbiculus 59 USA, TABER & al. (1988, K) The authors (TABER & al. 1988) indicated that the variation in the chromosome number n = 30, 2n = 60-62 was due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex imberbiculus 60 USA, TABER & al. (1988, K) The authors (TABER & al. 1988) indicated that the variation in the chromosome number n = 30, 2n = 60-62 was due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex imberbiculus 61 USA, TABER & al. (1988, K) The authors (TABER & al. 1988) indicated that the variation in the chromosome number n = 30, 2n = 60-62 was due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex imberbiculus 62 USA, TABER & al. (1988, K) The authors (TABER & al. 1988) indicated that the variation in the chromosome number n = 30, 2n = 60-62 was due to the presence of B-chromosomes.
Myrmicinae Pogonomyrmex magnacanthus 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex maricopa 16 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex montanus 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex occidentalis 32 USA, MEHLHOP & GARDNER (1982), TABER & al. (1988, K)
Myrmicinae Pogonomyrmex rugosus 32 USA, TABER & al. (1988, K)
Myrmicinae Pogonomyrmex subnitidus 16 32 USA, TABER & al. (1988, K)
Formicinae Polyergus samurai 27 54 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969)
Formicinae Polyrhachis ammon 21 42 Australia, IMAI & al. (1977, K)
Formicinae Polyrhachis dives 21 Taiwan, HUNG & al. (1972)
Formicinae Polyrhachis gribodoi 48 Indonesia, IMAI & al. (1985)
Formicinae Polyrhachis hector 21 42 Malaysia, IMAI & al. (1983)
Formicinae Polyrhachis hippomanes 20 40 Japan, IMAI (1969, K)
Formicinae Polyrhachis illaudata 18 Malaysia, IMAI & al. (1983) While n = 18 (IMAI & al. 1983) and n = 14 (IMAI & al. 1985) have been reported as the chromosome number of this species, no karyotypes of metaphase plates have been published to perform comparisons.
Formicinae Polyrhachis illaudata 14 28 Indonesia, IMAI & al. (1985) While n = 18 (IMAI & al. 1983) and n = 14 (IMAI & al. 1985) have been reported as the chromosome number of this species, no karyotypes of metaphase plates have been published to perform comparisons.
Formicinae Polyrhachis lacteipennis (as P. simplex) 42 India, IMAI & al. (1984, K)
Formicinae Polyrhachis lamellidens 42 Japan, IMAI (1969)
Formicinae Polyrhachis rastellata 21 42 CROZIER (1970b, K), IMAI & al. (1983)
Formicinae Polyrhachis sp. (as ANIC-1) 42 Australia, IMAI & al. (1977, K)
Formicinae Polyrhachis sp. 1 21 Malaysia, GOÑI & al. (1982)
Formicinae Polyrhachis sp. 2 21 Malaysia, GOÑI & al. (1982)
Formicinae Polyrhachis sp. 3 20 Malaysia, GOÑI & al. (1982)
Ponerinae Ponera japonica 12 Malaysia, IMAI & al. (1983)
Ponerinae Ponera pennsylvanica 12 USA, HAUSCHTECK-JUNGEN & JUNGEN (1983, M)
Ponerinae Ponera scabra 3 Japan, IMAI & KUBOTA (1972, K), CROZIER (1975, M), IMAI & al. (1988a, K) In this species the chromosome numbers found are n = 3-4, 2n = 7 (IMAI & KUBOTA 1972, CROZIER 1975, IMAI & al. 1988). Odd diploid chromosome numbers are possible due to a chromosome fusion, since they present a large metacentric chromosome that is not present in the haploid karyotypes.
Ponerinae Ponera scabra 4 Japan, IMAI & KUBOTA (1972, K), CROZIER (1975, M), IMAI & al. (1988a, K) In this species the chromosome numbers found are n = 3-4, 2n = 7 (IMAI & KUBOTA 1972, CROZIER 1975, IMAI & al. 1988). Odd diploid chromosome numbers are possible due to a chromosome fusion, since they present a large metacentric chromosome that is not present in the haploid karyotypes.
Ponerinae Ponera scabra 7 Japan, IMAI & KUBOTA (1972, K), CROZIER (1975, M), IMAI & al. (1988a, K) In this species the chromosome numbers found are n = 3-4, 2n = 7 (IMAI & KUBOTA 1972, CROZIER 1975, IMAI & al. 1988). Odd diploid chromosome numbers are possible due to a chromosome fusion, since they present a large metacentric chromosome that is not present in the haploid karyotypes.
Ponerinae Ponera scabra 8 Japan, IMAI & KUBOTA (1972, K), CROZIER (1975, M), IMAI & al. (1988a, K) In this species the chromosome numbers found are n = 3-4, 2n = 7 (IMAI & KUBOTA 1972, CROZIER 1975, IMAI & al. 1988). Odd diploid chromosome numbers are possible due to a chromosome fusion, since they present a large metacentric chromosome that is not present in the haploid karyotypes.
Ponerinae Ponera sp. 6 Japan, IMAI (1969, K)
Ponerinae Ponera sp. 12 Indonesia, IMAI & al. (1985)
Formicinae Prenolepis imparis 16 Switzerland, HAUSCHTECK (1962, M)
Formicinae Prenolepis jerdoni 16 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 20 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 25 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 27 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 30 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 31 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 32 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 34 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Formicinae Prenolepis jerdoni 36 Malaysia, GOÑI & al. (1982), IMAI & al. (1983) A highly variable chromosome number has been found in this species, with n = 16, 20, 25, 27. The standard haploid karyotype has 16 chromosomes and the observed variation has been explained by the presence of 4 to 11 B-chromosomes (IMAI & al. 1988a).
Myrmicinae Pristomyrmex punctatus (as P. pungens) 12 24 Japan, IMAI & YOSIDA (1964), IMAI (1966, M), IMAI (1969), ITOW & al. (1984, M)
Myrmicinae Pristomyrmex sp. 22 Malaysia, GOÑI & al. (1982)
Myrmicinae Pristomyrmex sp. 2 14 Malaysia, IMAI & al. (1983)
Myrmicinae Proatta sp. 32 Malaysia, GOÑI & al. (1982)
Proceratiinae Probolomyrmex sp. 28 Malaysia, GOÑI & al. (1982)
Proceratiinae Proceratium silaceum 18 46 USA, CROZIER (1970b, K)
Proceratiinae Proceratium sp. 48 Sarawak, TJAN & al. (1986)
Formicinae Prolasius sp. (as ANIC-1) 9 18 Australia, IMAI & al. (1977, K)
Formicinae Prolasius sp. (as ANIC-2) 18 Australia, IMAI & al. (1977, K)
Ponerinae Pseudoneoponera tridentata 28 Malaysia, IMAI & al. (1983)
Formicinae Pseudolasius sp. 30 Indonesia, IMAI & al. (1985)
Formicinae Pseudolasius sp. 30 Sarawak, TJAN & al. (1986)
Formicinae Pseudolasius sp. (as near P. emeryi) 14 Taiwan, HUNG & al. (1972)
Formicinae Pseudolasius sp. 1 8 Malaysia, IMAI & al. (1983)
Formicinae Pseudolasius sp. 2 15 Malaysia, IMAI & al. (1983) Probably the standard chromosome number of this species is n = 15, 2n = 30, while n = 17 and n = 19 has also been found (IMAI & al. 1983), due to the presence of B-chromosomes.
Formicinae Pseudolasius sp. 2 17 Malaysia, IMAI & al. (1983) Probably the standard chromosome number of this species is n = 15, 2n = 30, while n = 17 and n = 19 has also been found (IMAI & al. 1983), due to the presence of B-chromosomes.
Formicinae Pseudolasius sp. 2 19 Malaysia, IMAI & al. (1983) Probably the standard chromosome number of this species is n = 15, 2n = 30, while n = 17 and n = 19 has also been found (IMAI & al. 1983), due to the presence of B-chromosomes.

Formicinae

Pseudolasius sp. 2 30 Malaysia, IMAI & al. (1983) Probably the standard chromosome number of this species is n = 15, 2n = 30, while n = 17 and n = 19 has also been found (IMAI & al. 1983), due to the presence of B-chromosomes.
Pseudomyrmecinae Pseudomyrmex gracilis 70 Brazil, SPOSITO & al. (2006)
Pseudomyrmecinae Pseudomyrmex holmgreni 50 Brazil, SPOSITO & al. (2006)
Pseudomyrmecinae Pseudomyrmex penetrator 24 Brazil, SPOSITO & al. (2006)
Pseudomyrmecinae Pseudomyrmex penetrator 24 French Guiana, Mariano et al., 2011 Karyotype formula: 22M + 2A
Pseudomyrmecinae Pseudomyrmex schuppi 24 Brazil, SPOSITO & al. (2006)
Pseudomyrmecinae Pseudomyrmex sp. 1 nr. simplex 43 Brazil, SPOSITO & al. (2006)
Pseudomyrmecinae Pseudomyrmex sp. 2 nr. simplex 50 Brazil, SPOSITO & al. (2006)
Pseudomyrmecinae Pseudomyrmex sp. 3 44 Brazil, SPOSITO & al. (2006)
Ponerinae Pseudoneoponera rufipes (as Bothroponera rufipes) 48 India, IMAI & al. (1984, K)
Myrmicinae Recurvidris sp. (as Trigonogaster sp.) 24 India, IMAI & al. (1984, K)

Ectatomminae

Rhytidoponera aciculata 52 Australia, IMAI & al. (1977, K)
Ectatomminae Rhytidoponera chalybaea 42 Australia, IMAI & al. (1977, K)
Ectatomminae Rhytidoponera impressa 42 Australia, IMAI & al. (1977, K)
Ectatomminae Rhytidoponera lamellinodis 52 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera maniae 39 Australia, IMAI & al. (1977, K) In this species, diploid chromosome numbers of 2n = 39, 44-48 have been found (IMAI & al. 1977). This variation in relation to the chromosome number is a consequence of Robertsonian polymorphisms in which the increase in chromosome number is accompanied by a reduction of metacentric chromosomes and an increase in acrocentric chromosomes.
Ectatomminae Rhytidoponera maniae 44 Australia, IMAI & al. (1977, K) In this species, diploid chromosome numbers of 2n = 39, 44-48 have been found (IMAI & al. 1977). This variation in relation to the chromosome number is a consequence of Robertsonian polymorphisms in which the increase in chromosome number is accompanied by a reduction of metacentric chromosomes and an increase in acrocentric chromosomes.
Ectatomminae Rhytidoponera maniae 48 Australia, IMAI & al. (1977, K) In this species, diploid chromosome numbers of 2n = 39, 44-48 have been found (IMAI & al. 1977). This variation in relation to the chromosome number is a consequence of Robertsonian polymorphisms in which the increase in chromosome number is accompanied by a reduction of metacentric chromosomes and an increase in acrocentric chromosomes.
Ectatomminae Rhytidoponera mayri 50 Australia, IMAI & al. (1977, K)
Ectatomminae Rhytidoponera metallica 17 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 18 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 19 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 20 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 21 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 22 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 22 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 23 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 24 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 36 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 37 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 41 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 42 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 43 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 44 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 46 Australia, IMAI & al. (1977) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 24 Australia, CROZIER (1969, K, M) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 41 Australia, CROZIER (1969, K, M) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 42 Australia, CROZIER (1969, K, M) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 43 Australia, CROZIER (1969, K, M) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 24 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 34 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 35 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 36 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 37 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 38 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera metallica 46 Australia, CROZIER & al. (1986) In this species 2n = 22-24, 36-37, 41-44 and 46 have been found (CROZIER 1969, IMAI & al. 1977). This variation is due to Robertsonian polymorphism similar to that found in R. maniae, and at least six larger chromosome pairs were found to be involved in the Robertsonian polymorphism.
Ectatomminae Rhytidoponera punctata 50 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera purpurea 38 Australia, IMAI & al. (1977, K)
Ectatomminae Rhytidoponera sp. (as ANIC-10) 46 Australia, CROZIER & al. (1986)

Ectatomminae

Rhytidoponera sp. (as ANIC-10) 49 Australia, CROZIER & al. (1986)

Ectatomminae

Rhytidoponera sp. (as ANIC-11) 50 Australia, CROZIER & al. (1986)

Ectatomminae

Rhytidoponera sp. (as ANIC-12) 50 Australia, CROZIER & al. (1986)

Ectatomminae

Rhytidoponera sp. (as ANIC-13) 52 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera sp. (as ANIC-14) 23 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera sp. (as ANIC-15) 50 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera sp. (as ANIC-16) 52 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera sp. (as ANIC-9) 48 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera tasmaniensis-1 30 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera tasmaniensis-2 46 Australia, CROZIER & al. (1986)
Ectatomminae Rhytidoponera victoriae 21 42 Australia, CROZIER (1969, M), CROZIER (1970b), CROZIER & al. (1986), IMAI & al. (1977, K)
Myrmicinae Sericomyrmex amabilis 50 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Solenopsis aurea 32 USA, CROZIER (1970b, K)
Myrmicinae Solenopsis fugax 11 22 Switzerland, HAUSCHTECK (1961, M)
Myrmicinae Solenopsis fugax 22 Japan, IMAI (1969, K)
Myrmicinae Solenopsis geminata 16 32 USA, CROZIER (1970b, K)
Myrmicinae Solenopsis geminata 32 India, IMAI & al. (1984, K)
Myrmicinae Solenopsis invicta 16 32 USA, GLANCEY & al. (1976)
Myrmicinae Solenopsis molesta 22 USA, CROZIER (1970b, K)
Myrmicinae Solenopsis richteri 16 USA, GLANCEY & al. (1976)
Myrmicinae Solenopsis saevissima 16 32 Uruguay, GOÑI & al. (1983, K)
Myrmicinae Solenopsis sp. 38 Malaysia, GOÑI & al. (1982, as Diplorhoptrum sp.)
Myrmicinae Solenopsis sp. 11 Australia, CROZIER (1966)
Myrmicinae Solenopsis xyloni 16 32 USA, TABER & COKENDOLPHER (1988, K)
Myrmicinae Stenamma brevicorne 4 8 USA, HAUSCHTECK (1962, M), HAUSCHTECK (1963)
Myrmicinae Stenamma westwoodii 20 HAUSCHTECK-JUNGEN (In CROZIER 1975)
Formicinae Stigmacros sp. (as ANIC-1) 38 Australia, IMAI & al. (1977, K)
Formicinae Stigmacros sp. (as ANIC-3) 10 20 Australia, IMAI & al. (1977, K)
Amblyoponinae Stigmatomma reclinatum (as Amblyopone reclinata) 38 Malaysia, IMAI & al. (1983)
Myrmicinae Strongylognathus huberi 14 Switzerland, HAUSCHTECK (1962, M)
Myrmicinae Strumigenys dohertyi (as Smithistruma taipingensis) 12 24 Malaysia, IMAI & al. (1983)
Myrmicinae Strumigenys doriae 22 Indonesia, IMAI & al. (1985)
Myrmicinae Strumigenys friedae 24 Australia, IMAI & al. (1977, K)
Myrmicinae Strumigenys godeffroyi 40 Malaysia, IMAI & al. (1983) Malaysian populations were found to have 2n = 40 (IMAI & al. 1983) and Indonesian populations 2n = 44 (IMAI & al. 1985). No karyotypes of metaphase plates have been published.

Myrmicinae

Strumigenys godeffroyi 44 Indonesia, IMAI & al. (1985) Malaysian populations were found to have 2n = 40 (IMAI & al. 1983) and Indonesian populations 2n = 44 (IMAI & al. 1985). No karyotypes of metaphase plates have been published.
Myrmicinae Strumigenys louisianae 4 United States, Alves-Silva, et al. (2014)
Myrmicinae Strumigenys mutica (as Kyidris mutica) 36 Indonesia, IMAI & al. (1985)
Myrmicinae Strumigenys sp. 38 Indonesia, IMAI & al. (1985, as Smithistruma sp.)
Myrmicinae Strumigenys sp. 13 BROWN (In CROZIER 1975, as Smithistruma sp.)
Myrmicinae Strumigenys sp. 16 Malaysia, GOÑI & al. (1982, as Smithistruma sp.)
Dolichoderinae Tapinoma erraticum 8 16 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983, K); Spain, PALOMEQUE & al. (1988, M, K), LORITE & al. (1998b, M, K)
Dolichoderinae Tapinoma indicum 7 IMAI (in CROZIER 1975) For this species, n = 7 was first reported (IMAI, in CROZIER 1975) but later IMAI & al. (1984) presented a karyotype of this species with a 2n = 10.
Dolichoderinae Tapinoma indicum 10 India, IMAI & al. (1984, K) For this species, n = 7 was first reported (IMAI, in CROZIER 1975) but later IMAI & al. (1984) presented a karyotype of this species with a 2n = 10.
Dolichoderinae Tapinoma melanocephalum 5 10 USA, CROZIER (1970a, K) (1970b)
Dolichoderinae Tapinoma melanocephalum 10 India, IMAI & al. (1984, K); Indonesia, IMAI & al. (1985)
Dolichoderinae Tapinoma nigerrimum 9 Tunisia, HAUSCHTECK-JUNGEN & JUNGEN (1983, M) Currently Tapinoma nigerrimum is considered a junior synonym of T. erraticum (BOLTON & al. 2007). However, we have considered morphological and karyological data that indicate that T. nigerrimum is a separate species and plan to lift the taxon from synonymy (P. Lorite, T. Palomeque & A. Tinaut, unpubl.). A polymorphism by the presence of a supernumerary chromosome segment has been detected in this species (PALOMEQUE & al. 1993a). The standard haploid formula in this species is n = 5M + 2SM + 2ST. The supernumerary chromosome segment in one of the subtelocentric chromosomes changes this chromosome to submetacentric (n = 5M + 3SM + 1ST).
Dolichoderinae Tapinoma nigerrimum 9 18 Spain, PALOMEQUE & al. (1988, M, K), PALOMEQUE & al. (1990a, M), PALOMEQUE & al. (1990b, M, K), PALOMEQUE & al. (1993a, M, K), LORITE & al. (1996a, M, K), LORITE & al. (1997, M) ), LORITE & al. (1998b, M, K), LORITE & al. (1999a, M, K), LORITE & al. (1999b, M, K), LORITE & al. (2002a, M, K) Currently Tapinoma nigerrimum is considered a junior synonym of T. erraticum (BOLTON & al. 2007). However, we have considered morphological and karyological data that indicate that T. nigerrimum is a separate species and plan to lift the taxon from synonymy (P. Lorite, T. Palomeque & A. Tinaut, unpubl.). A polymorphism by the presence of a supernumerary chromosome segment has been detected in this species (PALOMEQUE & al. 1993a). The standard haploid formula in this species is n = 5M + 2SM + 2ST. The supernumerary chromosome segment in one of the subtelocentric chromosomes changes this chromosome to submetacentric (n = 5M + 3SM + 1ST).
Dolichoderinae Tapinoma sessile 8 16 USA, CROZIER (1970a, M, K), TABER & COKENDOLPHER (1988, K)
Dolichoderinae Tapinoma simrothi 9 HAUSCHTECK-JUNGEN (in CROZIER, 1975)
Dolichoderinae Tapinoma simrothi 18 Tunisia, Spain, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Dolichoderinae Tapinoma sp. 5 10 Malaysia, GOÑI & al. (1982)
Dolichoderinae Technomyrmex albipes 16 Australia, IMAI & al. (1977, K); India, IMAI & al. (1984, K) CROZIER (1968a) found a chromosome number of n = 9, 2n = 18 in an Australian population of this species. Afterwards, however, IMAI & al. (1977) and IMAI & al. (1984) indicated that the chromosome number for this species was n = 8, 2n = 16 in populations from Australia and India. IMAI & al. (1984) considered both karyotypes to be related by chromosome rearrangements. Crozier's population presents a karyotype with seven medium-sized metacentric chromosomes, and two small chromosomes, one metacentric and the other one acrocentric. All chromosomes in the populations analysed by IMAI & al. (1984) were found to be metacentric. These authors indicate that the two small chromosomes of the n = 9 karyotype correspond to the smallest metacentric chromosome in the n = 8 karyotype. The n = 9 karyotype derived from the n = 8 due to a centric fission and a pericentromeric inversion.
Dolichoderinae Technomyrmex albipes 9 18 Australia, CROZIER (1968a, K) CROZIER (1968a) found a chromosome number of n = 9, 2n = 18 in an Australian population of this species. Afterwards, however, IMAI & al. (1977) and IMAI & al. (1984) indicated that the chromosome number for this species was n = 8, 2n = 16 in populations from Australia and India. IMAI & al. (1984) considered both karyotypes to be related by chromosome rearrangements. Crozier's population presents a karyotype with seven medium-sized metacentric chromosomes, and two small chromosomes, one metacentric and the other one acrocentric. All chromosomes in the populations analysed by IMAI & al. (1984) were found to be metacentric. These authors indicate that the two small chromosomes of the n = 9 karyotype correspond to the smallest metacentric chromosome in the n = 8 karyotype. The n = 9 karyotype derived from the n = 8 due to a centric fission and a pericentromeric inversion.
Dolichoderinae Technomyrmex sp. 30 Malaysia, GOÑI & al. (1982), IMAI & al. (1983)
Dolichoderinae Technomyrmex sp. 1 28 Indonesia, IMAI & al. (1985)
Dolichoderinae Technomyrmex sp. 2 30 Indonesia, IMAI & al. (1985)
Dolichoderinae Technomyrmex sp. 2 (as T. bicolor group) 28 India, IMAI & al. (1984, K)
Myrmicinae Temnothorax affinis (as Leptothorax affinis) 9 France, Germany, Switzerland, FISCHER (1987, K)
Myrmicinae Temnothorax albipennis (as Leptothorax albipennis, L. tuberointerruptus, Stenamma albipennis) 8 Great Britain, ORLEDGE (1998, M, K); Germany, FISCHER (1987, K) In this species, several chromosome rearrangements have been noted, such as centric fissions and fusions, and pericentromeric inversions (FISCHER 1987).
Myrmicinae Temnothorax ambiguus (as Leptothorax ambiguus) 22 Canada, FISCHER (1987, K)
Myrmicinae Temnothorax andrei (as Leptothorax andrei) 10 USA, FISCHER (1987, K)
Myrmicinae Temnothorax angustulus (as Leptothorax angustulus) 23 France, FISCHER (1987, K, M)
Myrmicinae Temnothorax cf. interrupus (as Leptothorax cf. interruptus) 12 Greece, FISCHER (1987, K)
Myrmicinae Temnothorax cf. lichtensteini (as Leptothorax cf. lichtensteini) 14 France, Spain, FISCHER (1987)
Myrmicinae Temnothorax congruus (as Leptothorax congruus) 9 18 Japan, IMAI & KUBOTA (1972, K)
Myrmicinae Temnothorax corticalis (as Leptothorax corticalis) 9 HAUSCHTECK-JUNGEN (in CROZIER 1975) Although an n = 9 was initially reported (HAUSCHTECK-JUNGEN, in CROZIER 1975), later FISCHER (1987) observed that the chromosome number of this species was n = 12.
Myrmicinae Temnothorax corticalis (as Leptothorax corticalis) 12 Germany, FISCHER (1987, K) Although an n = 9 was initially reported (HAUSCHTECK-JUNGEN, in CROZIER 1975), later FISCHER (1987) observed that the chromosome number of this species was n = 12.
Myrmicinae Temnothorax curvispinosus (as Leptothorax curvispinosus) 23 USA, FISCHER (1987, M) The standard karyotype of the species is n = 23. FISCHER (1987) found the presence of B-chromosomes with numbers ranging between 1 and 14.
Myrmicinae Temnothorax duloticus (as Leptothorax duloticus) 23 Canada, FISCHER (1987)
Myrmicinae Temnothorax duloticus (as Leptothorax duloticus) 24 Canada, FISCHER (1987)
Myrmicinae Temnothorax duloticus (as Leptothorax duloticus) 25 Canada, FISCHER (1987)
Myrmicinae Temnothorax exilis (as Leptothorax exilis) 11 France, Croatia, Italy, Turkey, FISCHER (1987, K)
Myrmicinae Temnothorax flavicornis (as Leptothorax flavicornis) 11 Italy, FISCHER (1987, K)
Myrmicinae Temnothorax gredosi (as Leptothorax gredosi) 17 Spain, FISCHER (1987, K)
Myrmicinae Temnothorax interruptus (as Leptothorax interruptus) 24 Germany, HAUSCHTECK-JUNGEN & JUNGEN (1983, K)
Myrmicinae Temnothorax interruptus (as Leptothorax interruptus) 12 Germany, Croatia, FISCHER (1987, K)
Myrmicinae Temnothorax kraussei (as Leptothorax kraussei) 14 France, FISCHER (1987, K)
Myrmicinae Temnothorax lichtensteini (as Leptothorax lichtensteini) 14 France, Italy, Croatia, FISCHER (1987, K)
Myrmicinae Temnothorax longispinosus (as Leptothorax longispinosus) 12 24 USA, CROZIER (1970b, K)
Myrmicinae Temnothorax longispinosus (as Leptothorax longispinosus) 12 Canada FISCHER (1987, K)
Myrmicinae Temnothorax melas (as Leptothorax melas) 13 France, FISCHER (1987, K)
Myrmicinae Temnothorax niger (as Leptothorax niger) 18 France, Italy, FISCHER (1987, K)
Myrmicinae Temnothorax nigriceps (as Leptothorax nigriceps) 18 Switzerland, HAUSCHTECK (1962, M) A polymorphism by the presence of a one B-chromosome has been found in this species (FISCHER 1987).
Myrmicinae Temnothorax nigriceps (as Leptothorax nigriceps) 9 Italy, Croatia, France, Germany, FISCHER (1987, K) A polymorphism by the presence of a one B-chromosome has been found in this species (FISCHER 1987).
Myrmicinae Temnothorax nylanderi (as Leptothorax nylanderi) 11 22 Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Myrmicinae Temnothorax nylanderi (as Leptothorax nylanderi) 11 Germany, Croatia, France, FISCHER (1987, K)
Myrmicinae Temnothorax parvulus (as Leptothorax parvulus) 14 (Italy), France, Switzerland, FISCHER (1987, K)
Myrmicinae Temnothorax aveli (as Leptothorax rabaudi) 9 France, FISCHER (1987, K)
Myrmicinae Temnothorax racovitzai (as Leptothorax racovitzai) 21 France, FISCHER (1987, K)
Myrmicinae Temnothorax recedens (as Leptothorax recedens) 12 Italy, FISCHER (1987, K)
Myrmicinae Temnothorax rottenbergii (as Leptothorax rottenbergii) 11 Italy, FISCHER (1987, K)
Myrmicinae Temnothorax rugatulus (as Leptothorax rugatulus) 14 USA, TABER & COKENDOLPHER (1988, K), FISCHER (1987, K) The variation 2n = 26-27 (TABER & COKENDOLPHER 1988) found in the chromosome number is possibly due to the presence of B-chromosomes.
Myrmicinae Temnothorax rugatulus (as Leptothorax rugatulus) 26 USA, TABER & COKENDOLPHER (1988, K), FISCHER (1987, K) The variation 2n = 26-27 (TABER & COKENDOLPHER 1988) found in the chromosome number is possibly due to the presence of B-chromosomes.
Myrmicinae Temnothorax rugatulus (as Leptothorax rugatulus) 27 USA, TABER & COKENDOLPHER (1988, K), FISCHER (1987, K) The variation 2n = 26-27 (TABER & COKENDOLPHER 1988) found in the chromosome number is possibly due to the presence of B-chromosomes.

Myrmicinae

Temnothorax schaumii (as Leptothorax schaumii) 9 USA, HAUSCHTECK-JUNGEN & JUNGEN (1983)
Myrmicinae Temnothorax sordidulus (as Leptothorax sordidulus) 11 Italy, Croatia, Switzerland, FISCHER (1987, K)
Myrmicinae Temnothorax specularis (as Leptothorax specularis) 17 Italy, FISCHER (1987, K)
Myrmicinae Temnothorax spinosior (as Leptothorax spinosior) 12 24 Japan, IMAI (1966, M), IMAI (1969, K), IMAI (1974, K), IMAI & YOSIDA (1964), FISCHER (1987, K) The standard chromosome number of this species is n = 12, 2n = 24 (IMAI 1966). Later IMAI (1974) detected in this species a polymorphism due to the presence of B-chromosomes. The number of B-chromosomes ranged from one to 12 in males and their number varied among individuals of the same population.
Myrmicinae Temnothorax spinosus (as Leptothorax spinosus) 16 Algeria, FISCHER (1987, K)
Myrmicinae Temnothorax spp. (as T. tuberum group) 9 Greece, Croatia, France, FISCHER (1987, K, as Leptothorax spp., tuberum group)
Myrmicinae Temnothorax luteus (as Leptothorax tristis) 21 France, Switzerland, FISCHER (1987, K)
Myrmicinae Temnothorax tuberum (as Leptothorax tuberum) 9 18 Switzerland, HAUSCHTECK (1962, M, K), HAUSCHTECK-JUNGEN & JUNGEN (1983, K)
Myrmicinae Temnothorax tuberum (as Leptothorax tuberum) 9 Switzerland, Sweden, France, FISCHER (1987, K)
Myrmicinae Temnothorax unifasciatus (as Leptothorax rougeti, L. unifasciatus) 8 FISCHER (1987, K, as Leptothorax rougeti) Temnothorax unifasciatus has a stable karyotype since material for at least six European countries has been karyotyped and a chromosome number of n = 9 has been consistently found, all without chromosome polymorphisms. T. rougeti is currently considered a nonvalid taxon and a synonym of T. unifasciatus. However, the two taxa have different chromosome numbers and their karyotypes cannot easily be related. The material classified as T. rougeti has a haploid chromosome number of n = 8 and their karyotype formula is 6M + 2A, the first metacentric pair being twofold larger than the other metacentric chromosomes (FISCHER 1987). However, the karyotype in T. unifasciatus is n = 9M, also with the first metacentric pair being twofold larger than the other metacentric chromosomes and similar in size to the first pair of T. rougeti.
Myrmicinae Temnothorax unifasciatus (as Leptothorax rougeti, L. unifasciatus) 9 18 Germany, Switzerland, HAUSCHTECK-JUNGEN & JUNGEN (1983, K, as Leptothorax unifasciatus) Temnothorax unifasciatus has a stable karyotype since material for at least six European countries has been karyotyped and a chromosome number of n = 9 has been consistently found, all without chromosome polymorphisms. T. rougeti is currently considered a nonvalid taxon and a synonym of T. unifasciatus. However, the two taxa have different chromosome numbers and their karyotypes cannot easily be related. The material classified as T. rougeti has a haploid chromosome number of n = 8 and their karyotype formula is 6M + 2A, the first metacentric pair being twofold larger than the other metacentric chromosomes (FISCHER 1987). However, the karyotype in T. unifasciatus is n = 9M, also with the first metacentric pair being twofold larger than the other metacentric chromosomes and similar in size to the first pair of T. rougeti.
Myrmicinae Temnothorax unifasciatus (as Leptothorax rougeti, L. unifasciatus) 9 Germany, France, Italy, Croatia, Greece, FISCHER (1987, K, as Leptothorax unifasciatus) Temnothorax unifasciatus has a stable karyotype since material for at least six European countries has been karyotyped and a chromosome number of n = 9 has been consistently found, all without chromosome polymorphisms. T. rougeti is currently considered a nonvalid taxon and a synonym of T. unifasciatus. However, the two taxa have different chromosome numbers and their karyotypes cannot easily be related. The material classified as T. rougeti has a haploid chromosome number of n = 8 and their karyotype formula is 6M + 2A, the first metacentric pair being twofold larger than the other metacentric chromosomes (FISCHER 1987). However, the karyotype in T. unifasciatus is n = 9M, also with the first metacentric pair being twofold larger than the other metacentric chromosomes and similar in size to the first pair of T. rougeti.
Myrmicinae Temnothorax americanus (as Harpagoxenus americanus) 11 USA, Canada, FISCHER (1987, K)
Myrmicinae Temnothorax adlerzi (as Epimyrma adlerzi) 10 Greece, DOUWES & al. (1988, K)
Myrmicinae Temnothorax algerianus (as Epimyrma algeriana) 10 DOUWES & al. (1988)
Myrmicinae Temnothorax bernardi (as Epimyrma bernardi) 10 Spain, BUSCHINGER & al. (1986), FISCHER (1987, K)
Myrmicinae Temnothorax corsicus (as Epimyrma corsica) 10 France, BUSCHINGER & al. (1986), FISCHER (1987)
Myrmicinae Temnothorax gordiagini (as Epimyrma gordiagini) 10 Croatia, BUSCHINGER & al. (1983, K), FISCHER (1987, K)
Myrmicinae Temnothorax kraussei (as Epimyrma kraussei, E. foreli, E. vandeli) 10 France, Italy, Spain, BUSCHINGER & al. (1986, K), FISCHER (1987, K)
Myrmicinae Temnothorax ravouxi (as Epimyrma ravouxi) 10 Italy, France, Switzerland, Germany, BUSCHINGER & al. (1986, K), FISCHER (1987, K)
Myrmicinae Temnothorax stumperi (as Epimyrma stumperi) 10 France, Switzerland, BUSCHINGER & al. (1986), FISCHER (1987)
Myrmicinae Tetramorium adelphon 22 Indonesia, IMAI & al. (1985)
Myrmicinae Tetramorium brevidentatum 10 20 Indonesia, IMAI & al. (1985)
Myrmicinae Tetramorium caespitum 14 28 Switzerland, HAUSCHTECK (1961, M); Japan, IMAI (1966, M), IMAI (1969, K), IMAI & YOSIDA (1964)
Myrmicinae Tetramorium caespitum 14 Spain, PALOMEQUE & al. (1987, M, K), PALOMEQUE & al. (1990b, M, K), LORITE & al. (2000, M, K)
Myrmicinae Tetramorium eleates 28 Malaysia, IMAI & al. (1983)
Myrmicinae Tetramorium forte (as T. hispanicum) 14 Spain, PALOMEQUE & al. (1987, M, K), LORITE & al. (2000, M, K) PALOMEQUE & al. (1987) analysed the karyotype of the taxon Tetramorium hispanicum. In BOLTON & al. (2007) T. hispanicum is considered as a junior synonymy of T. ruginode. However, according to GÜSTEN & al. (2006) T. hispanicum is a junior synonymy of T. forte.
Myrmicinae Tetramorium guineense 22 Japan, IMAI (1969, K)
Myrmicinae Tetramorium insolens 22 Indonesia, IMAI & al. (1985)
Myrmicinae Tetramorium kheperra 14 Indonesia, IMAI & al. (1985)
Myrmicinae Tetramorium lanuginosum (as Triglyphothrix lanuginosa) 14 India, IMAI & al. (1984, K)
Myrmicinae Tetramorium pacificum 22 Indonesia, IMAI & al. (1985)
Myrmicinae Tetramorium pnyxis 20 Malaysia, IMAI & al. (1983)
Myrmicinae Tetramorium semilaeve 14 Spain, PALOMEQUE & al. (1987, M, K), PALOMEQUE & al. (1990b, M, K), LORITE & al. (2000, M, K)
Myrmicinae Tetramorium seneb 20 Malaysia, IMAI & al. (1983)
Myrmicinae Tetramorium simillimum 14 India, IMAI & al. (1984, K)
Myrmicinae Tetramorium smithi 26 India, IMAI & al. (1984, K); Indonesia, IMAI & al. (1985); Sarawak, TJAN & al. (1986)
Myrmicinae Tetramorium sp. 20 Taiwan, HUNG & al. (1972, as Xiphomyrmex sp.)
Myrmicinae Tetramorium sp. (as ANIC-3) 20 Australia, IMAI & al. (1977, K, as Xiphomyrmex sp. ANIC-3)
Myrmicinae Tetramorium sp. (as ANIC-2) 18 Australia, IMAI & al. (1977, K, as Xiphomyrmex sp. ANIC-2)
Myrmicinae Tetramorium sp. (as ANIC-4) 18 Australia, IMAI & al. (1977, K, as Xiphomyrmex sp. ANIC-4)
Myrmicinae Tetramorium sp. 1 20 Malaysia, GOÑI & al. (1982, as Triglyphothrix sp. 1)
Myrmicinae Tetramorium sp. 1 22 Malaysia, GOÑI & al. (1982)
Myrmicinae Tetramorium sp. 2 18 Malaysia, GOÑI & al. (1982, as Triglyphothrix sp. 2)
Myrmicinae Tetramorium sp. 2 20 Sarawak, TJAN & al. (1986)
Myrmicinae Tetramorium sp. 3 26 Malaysia, GOÑI & al. (1982)
Myrmicinae Tetramorium sp. 3 35 India, IMAI & al. (1984, K)
Myrmicinae Tetramorium sp. 3 36 India, IMAI & al. (1984, K)
Myrmicinae Tetramorium sp. 3 24 Sarawak, TJAN & al. (1986)
Myrmicinae Tetramorium sp. 4 14 Malaysia, GOÑI & al. (1982)
Myrmicinae Tetramorium spinosum 13 26 USA, TABER & COKENDOLPHER (1988, K)
Myrmicinae Tetramorium walshi 14 India, IMAI & al. (1984, K, as Triglyphothrix walshi)
Pseudomyrmecinae Tetraponera allaborans 16 Taiwan, HUNG & al. (1972)
Pseudomyrmecinae Tetraponera sp. 44 Malaysia, GOÑI & al. (1982)
Pseudomyrmecinae Tetraponera sp. 2 42 Malaysia, IMAI & al. (1983)
Myrmicinae Trachymyrmex holmgreni 20 Brazil, Barros et al. (2018)
Myrmicinae Trachymyrmex septentrionalis 10 20 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Trachymyrmex sp. 1 6 12 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Trachymyrmex sp. 2 18 Panama, MURAKAMI & al. (1998, K)
Myrmicinae Trichomyrmex glaber 38 India, IMAI & al. (1984, K)
Myrmicinae Trichomyrmex scabriceps 38 India, IMAI & al. (1984, K)
Myrmicinae Typhlomyrmex meire 10 20 Brazil, MARIANO & al. (2006b, K)
Myrmicinae Typhlomyrmex rogenhoferi 17 Brazil, MARIANO & al. (2006b, K)
Myrmicinae Typhlomyrmex rogenhoferi 19 Brazil, MARIANO & al. (2006b, K)
Myrmicinae Typhlomyrmex rogenhoferi 34 Brazil, MARIANO & al. (2006b, K)
Myrmicinae Typhlomyrmex rogenhoferi 38 Brazil, MARIANO & al. (2006b, K)
Myrmicinae Typhlomyrmex rogenhoferi 36 French Guyana, MARIANO & al. (2006b, K)
Myrmicinae Veromessor andrei 40 (USA), TABER & COKENDOLPHER (1988, K)
Myrmicinae Vollenhovia emeryi 18 36 Japan, IMAI & YOSIDA (1964), IMAI (1966a, M), IMAI (1969, K)
Myrmicinae Vollenhovia sp. 11 BROWN (in CROZIER 1975)
Myrmicinae Vollenhovia sp. (as ANIC-3) 40 Australia, IMAI & al. (1977, K)
Myrmicinae Vollenhovia sp. 1 49 Malaysia, IMAI & al. (1983)
Myrmicinae Vollenhovia sp. 1 50 Malaysia, IMAI & al. (1983)
Myrmicinae Vollenhovia sp. 2 33 Malaysia, IMAI & al. (1983)
Myrmicinae Vollenhovia sp. 2 34 Malaysia, IMAI & al. (1983)
Myrmicinae Vollenhovia sp. 2 36 Indonesia, IMAI & al. (1985)
Dorylinae Zasphinctus steinheili 45 Australia, IMAI & al. (1977, K) The variation is due to Robertsonian polymorphisms.
Dorylinae Zasphinctus steinheili 46 Australia, IMAI & al. (1977, K) The variation is due to Robertsonian polymorphisms.

References

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