Dolichoderinae

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The subfamily Dolichoderinae is one of four major species-rich subfamilies of ants, the others being Formicinae, Myrmicinae and Ponerinae. It is found world-wide and includes some of the world's most invasive species, including Linepithema humile (the Argentine ant), Tapinoma melanocephalum, Technomyrmex albipes and Technomyrmex difficilis.

The Dolichoderines lack a sting, but are armed with defensive compounds produced by the anal gland - a structure unique to the subfamily. This is the source of the pungent, and often unpleasant odors produced by many species when they are disturbed, crushed or otherwise annoyed. In many species colonies may be polygynous and/or polydomous. Some are predaceous, but most appear to be generalized scavengers with a strong liking for carbohydrates taken directly or indirectly from plant sources. In addition to founding colonies via single newly mated queens, some produce new colonies by budding or fission. Most Dolichoderines are free-living; a few are social parasites on other members of their subfamily.

Identification

The mesosoma is attached to the gaster by a single distinct segment, the petiole. The gaster is smooth, without constrictions between the segments. The sting is absent and the tip of the gaster is slit-like and without a circular opening (an acidopore).

Species of Dolichoderinae are most often confused with species of the subfamily Formicinae because both have a single segmented petiole, lack a sting and are often similar in overall body size and shape This is especially true for the smaller species such as those in Doleromyrma and Tapinoma. However, dolichoderines can always be separated from formicines because the tip of the gaster has a slit-like opening while all formicines have a small circular opening.

Males: Boudinot (2015) - The Dolichoderinae are uniquely identified by the telomere, which is strongly reduced and does not extend anteroventrad the basimere. Males of the subfamily are further identified by the following combination of characters: oblique mesopleural sulcus present; seven or fewer closed cells present on forewing; jugal lobe absent; petiolar peduncle short or absent; abdominal segment III unpetiolated; abdominal segment IV without cinctus between pre- and postsclerites; abdominal sternum IX unpronged and edentate. Additional characters for distinguishing males of the Dolichoderinae from the Aneuretinae and Formicinae are indicated in couplets 19 and 20 of the key to subfamilies key.

Shattuck (1992b): Seven characters were found which suggest the subfamily is monophyletic. These are

(1) Loss of pupal cocoons

(2) Reduction of the larval neck

(3) Reduced number of larval hairs

(4) Lightly sclerotized larval mandibles

(5) Larval maxillary palp and galea reduced to sensilla

(6) Small larval sericteries

(7) Cyclopentanoid monoterpene production.

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Keys including this Subfamily

Keys to Genus in this Subfamily

Distribution

Species of Dolichoderinae can be found in most regions of the world and in all major habitats. They also have a rich fossil history, with 20 fossil genera known, the third richest after Myrmicinae (38 genera) and Formicinae (31 genera). The relationships among these genera have been well documented (see Phylogeny of Dolichoderinae).

Distribution and Species Richness based on AntMaps

Statistics

Extant Taxa

Tribes Valid Genera % World Genera Invalid Genera Valid Species/Subsp. % World Species Invalid Species/Subsp.
6 28 5.5% 23 843 5.55% 324

Fossil Taxa

Fossil Genera % World Fossil Genera Valid Fossil Species/Subsp. % World Fossil Species/Subsp.
24 14.1% 148 16.43%

Fossils known from: Aix-en-Provence, France (Late Oligocene), Arkansas amber, Malvern, Arkansas, United States (Lutetian, Middle Eocene), Baltic amber (Bartonian, Middle to Late Eocene), Belarus amber, near Kobryn, Belarus (Eocene), Bembridge Marls, Isle of Wight, UK (Priabonian, Late Eocene), Bitterfeld amber (Bartonian, Middle to Late Eocene), Bolshaya Svetlovodnaya, Sikhote-Alin, Russia (Priabonian, Late Eocene), Célas, Gard, France (Late Eocene), Chon-Tyz mine, Naryn Province, Kyrgyzstan (Middle Miocene), Danish-Scandinavian amber (Bartonian, Middle to Late Eocene), Dominican amber, Dominican Republic (Burdigalian, Early Miocene), Florissant, Colorado, United States (Late Eocene), Foremost Formation amber, Alberta, Canada (Campanian, Late Cretaceous), Green River Formation, Colorado, United States (Lutetian, Middle Eocene), Kishenehn Formation shale, Montana, United States (Lutetian, Middle Eocene), Kleinkems, Germany (Early Oligocene), Kuclín, near Bílina, Czech Republic (Late Eocene), Malyi Kamyshlak, Kerch, Crimea, Russian Federation (Middle Miocene), Oeningen, Switzerland (Messinian, Late Miocene), Parschlug, Austria (Serravallian, Miocene), Quesnel, British Columbia, Canada (Early Miocene?), Radoboj, Croatia (Burdigalian, Early Miocene), Rott, Westphalia, Germany (Late Oligocene), Rovno amber (Priabonian, Late Eocene), Sakhalin amber, Ukraine (Thanetian, Paleocene), Shanwang, China (Early Miocene), Sicilian amber, Italy (Late/Upper Miocene).

List of Tribes and Genera

Tribes

Extant Genera

Fossil Genera

Evolutionary History

Boudinot (2015) - The Dolichoderinae is one of the major ant lineages, with over 700 described species distributed in 28 valid genera. Males are unknown for four genera (Ecphorella, Gracilidris, Loweriella, Nebothriomyrmex). One of the historically intractable problems of myrmecology has been the separation of male Dolichoderinae and Formicinae. Here, the telomeral character described by Yoshimura & Fisher (2011) is confirmed as a diagnostic synapomorphy of the subfamily on a global scale, while the antennal torulus to clypeus distance character was first described to the author’s knowledge in Czechowski et al. (2012). Several other characters were found to distinguish male Dolichoderinae and Formicinae, as indicated in the key and diagnosis. Genera of Dolichoderinae have been keyed globally by Shattuck (1992), although this key stands in need of updating. A key to the New World dolichoderine genera is in preparation (B. Boudinot, in prep.).

Radchencko (2023) - Dolichoderinae is one of the oldest evolutionary lineages of the modern ant subfamilies: its oldest members are known from the Late Cretaceous Canadian ambers (Campanian, 78–79 Ma), e. g. Eotapinoma macalpini and Chronomyrmex medicinehatensis (Dlussky, 1999; McKellar et al., 2013; see also Boudinot et al., 2022). Moreover, in Kachin amber (Myanmar the earliest Cenomanian, ca. 100 Ma), another undescribed dolichoderine genus and species were discovered (Boudinot et al., 2020, 2022).

The extant genera of Dolichoderinae were first found in the middle Eocene deposits (ca. 45 Ma) (Wilson, 1985; Dlussky & Rasnitsyn, 2002), but diversity of this subfamily considerably increased since the Late Eocene. Thus, in Late Eocene European ambers Dolichoderinae dominated in terms of the number of specimens, and were among the taxonomically most diverse subfamilies, inferior in this respect only to Myrmicinae and Formicinae. However, starting from the Oligocene their proportion began to decrease significantly (Dlussky, 2002, 2008; Dlussky & Rasnitsyn, 2002, 2007) and at present they are inferior to more subfamilies in the number of species and genera (as calculated based on Bolton, 2023).

Biology

Most species of Dolichoderinae are general predators or scavengers. Many also tend Hemiptera to collect honeydew or are associated with caterpillars. Nests are found in a wide variety of locations, including in the soil, under rocks and other objects, in rotten and living wood, in termite mounds, and in cracks between rocks. Some species (in the genus Arnoldius) are thought to establish their nests by new queens invading the nests of other ants, killing the queen, and using the captured workers to help raise her own offspring.

Flight Period

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Morphology

Karyotype Data

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Known Haploid Counts: 5, 7, 8, 9, 11, 12, 13, 14, 16.

Haploid Count Details: 11 (Taxon: Bothriomyrmex), 11 (Taxon: Bothriomyrmex corsicus), 12 (Taxon: Leptomyrmex erythrocephalus), 13 (Taxon: Dorymyrmex bicolor), 14 (Taxon: Dolichoderus scabridus), 14 (Taxon: Ochetellus glaber), 16 (Taxon: Forelius mccooki), 5 (Taxon: Tapinoma), 5 (Taxon: Tapinoma melanocephalum), 7 (Taxon: Tapinoma indicum), 7 (Taxon: Iridomyrmex), 7 (Taxon: Doleromyrma), 8 (Taxon: Tapinoma erraticum), 8 (Taxon: Tapinoma erraticum), 8 (Taxon: Anonychomyrma itinerans), 8 (Taxon: Papyrius nitidus), 8 (Taxon: Linepithema humile), 8 (Taxon: Tapinoma sessile), 9 (Taxon: Dorymyrmex thoracicus), 9 (Taxon: Iridomyrmex purpureus), 9 (Taxon: Tapinoma simrothi), 9 (Taxon: Tapinoma simrothi), 9 (Taxon: Iridomyrmex bicknelli), 9 (Taxon: Iridomyrmex mattiroloi), 9 (Taxon: Tapinoma nigerrimum), 9 (Taxon: Tapinoma nigerrimum), 9 (Taxon: Iridomyrmex), 9 (Taxon: Technomyrmex albipes), 9 (Taxon: Technomyrmex albipes).

Known Diploid Counts: 10, 12, 14, 16, 18, 20, 22, 26, 28, 30, 32, 33, 38, 46, 48.

Diploid Count Details: 10 (Taxon: Tapinoma), 10 (Taxon: Dolichoderus lutosus), 10 (Taxon: Tapinoma indicum), 10 (Taxon: Tapinoma melanocephalum), 10 (Taxon: Tapinoma melanocephalum), 10 (Taxon: Tapinoma melanocephalum), 12 (Taxon: Doleromyrma), 14 (Taxon: Iridomyrmex), 14 (Taxon: Doleromyrma), 16 (Taxon: Tapinoma erraticum), 16 (Taxon: Tapinoma erraticum), 16 (Taxon: Philidris cordata), 16 (Taxon: Philidris cordata), 16 (Taxon: Anonychomyrma itinerans), 16 (Taxon: Papyrius nitidus), 16 (Taxon: Linepithema humile), 16 (Taxon: Tapinoma sessile), 16 (Taxon: Anonychomyrma), 16 (Taxon: Technomyrmex albipes), 16 (Taxon: Technomyrmex albipes), 18 (Taxon: Dolichoderus), 18 (Taxon: Dorymyrmex pulchellus), 18 (Taxon: Iridomyrmex purpureus), 18 (Taxon: Dolichoderus bidens), 18 (Taxon: Dorymyrmex pyramicus), 18 (Taxon: Iridomyrmex anceps), 18 (Taxon: Tapinoma simrothi), 18 (Taxon: Iridomyrmex bicknelli), 18 (Taxon: Iridomyrmex mattiroloi), 18 (Taxon: Linepithema fuscum), 18 (Taxon: Linepithema fuscum), 18 (Taxon: Tapinoma nigerrimum), 18 (Taxon: Iridomyrmex), 18 (Taxon: Iridomyrmex), 18 (Taxon: Iridomyrmex), 18 (Taxon: Iridomyrmex), 18 (Taxon: Technomyrmex albipes), 20 (Taxon: Dolichoderus voraginosus), 22 (Taxon: Dolichoderus diversus), 22 (Taxon: Arnoldius pusillus), 26 (Taxon: Dorymyrmex bicolor), 26 (Taxon: Dorymyrmex flavus), 28 (Taxon: Dolichoderus quadripunctatus), 28 (Taxon: Technomyrmex), 28 (Taxon: Technomyrmex), 28 (Taxon: Azteca trigona), 28 (Taxon: Dolichoderus scabridus), 28 (Taxon: Ochetellus glaber), 30 (Taxon: Technomyrmex), 30 (Taxon: Technomyrmex), 30 (Taxon: Dolichoderus thoracicus), 32 (Taxon: Forelius mccooki), 33 (Taxon: Dolichoderus thoracicus), 38 (Taxon: Dolichoderus attelaboides), 38 (Taxon: Dolichoderus imitator), 38 (Taxon: Dolichoderus decollatus), 46 (Taxon: Dolichoderus imitator), 48 (Taxon: Iridomyrmex anceps).

Phylogeny

Formicoidea
Camelomecia clade
(unplaced to family)

Camelomecia

Camelosphecia

Formicidae              
Stem Formicidae

Unplaced to subfamily (Baikuris, Cretomyrma, Dlusskyidris)

Clade Sphecomyrmines

Haidomyrmecinae

Sphecomyrminae

Zigrasimeciinae

Clade Antennoclypeata

Brownimeciinae

Crown Formicidae              

Leptanillinae

Martialinae

Amblyoponinae - see relationships

Apomyrminae

Proceratiinae

Ponerinae - see relationships

Agroecomyrmecinae

Paraponerinae

Dorylinae - see relationships

Aneuretinae

Dolichoderinae - see relationships

Myrmeciinae - see relationships

Pseudomyrmecinae - see relationships

Formicinae - see relationships

Ectatomminae - see relationships

Myrmicinae - see relationships

See Phylogeny of Formicidae for details.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • DOLICHODERINAE [subfamily of Formicidae]
    • Dolichoderidae Forel, 1878: 364. Type-genus: Dolichoderus Lund, 1831a: 130.

Taxonomic History

  • Dolichoderinae as family: Emery, 1894g: 378 [Dolichoderidae]; Ashmead, 1905b: 384 [Dolichoderidae]; Novák & Sadil, 1941: 94 [Dolichoderidae]; Bernard, 1951: 1071 [Dolichoderidae]; Bernard, 1953b: 255 [Dolichoderidae].
  • Dolichoderinae as tribe of Formicidae: André, 1882a: 127 [Dolichoderidae].
  • Dolichoderinae as subfamily of Formicidae: Forel, 1878: 364 [Dolichoderidae]; Emery & Forel, 1879a: 454 [Dolichoderidae]; Nasonov, 1889: 26 [Dolichoderidae]; Forel, 1892j: 220 [Dolichoderidae]; Forel, 1893a: 165; Dalla Torre, 1893: 156; Forel, 1895b: 107 [Dolichoderidae]; Emery, 1895j: 771 [subfamily spelled Dolichoderini]; Emery, 1896e: 186; Forel, 1899c: 98; Bingham, 1903: 288; Ruzsky, 1905b: 102; Wheeler, W.M. 1910g: 142; Emery, 1913a: 2; Arnold, 1915: 143; Wheeler, W.M. 1915h: 71; Wheeler, 1915g: 811 [Dolichoderides]; Arnold, 1915: 143; Donisthorpe, 1915d: 178; Forel, 1917: 247; Escherich, 1917: 2 [Dolichoderini]; Bondroit, 1918: 86 [Dolichoderitae]; Wheeler, W.M. 1920: 53; Wheeler, W.M. 1922a: 199; Borgmeier, 1923: 80; Karavaiev, 1936: 163; Smith, M.R. 1951a: 833; Clark, 1951: 16; Brown, 1954e: 29; Kempf, 1972a: 266; Wheeler, G.C. & Wheeler, J. 1972a: 41; Brown, 1973b: 169; subsequent authors; Shattuck, 1992c: 20.
  • Dolichoderinae as formicomorph subfamily of Formicidae: Bolton, 2003: 18, 80.
  • Dolichoderinae as formicoid subfamily of Formicidae: Brady, et al. 2006: 18173; Moreau, et al. 2006: 102.
  • Dolichoderinae as formicoid dolichoderomorph subfamily of Formicidae: Ward, 2007a: 556.

Taxonomic References

Forel, 1878: 364, 380 (diagnosis, genera); Dalla Torre, 1893: 156 (catalogue); Emery, 1895j: 771 (synoptic classification); Emery, 1896e: 186 (genera key); Handlirsch, 1907: 869 (*fossil taxa catalogue); Wheeler, W.M. 1910g: 142 (diagnosis); Emery, 1913a: 2, 6 (diagnosis, tribe key, catalogue); Emery, 1913a: 17 (Tapinomini diagnosis, genera key, catalogue); Arnold, 1915: 144, (diagnosis); Gallardo, 1916a: 3 (diagnosis); Forel, 1917: 247 (synoptic classification); Forel, 1921c: 136 (diagnosis); Wheeler, W.M. 1922a: 199, 687, 688 (diagnosis, tribe key, Tapinomini genera key); Brown & Nutting, 1950: 127 (venation, phylogeny); Brown, 1954e: 29 (phylogeny); Pavan, 1955: 135 (gastral organs); Eisner, 1957: 453 (proventriculus morphology); Bernard, 1967: 246 (diagnosis); Gotwald, 1969: 118 (mouthparts morphology); Wheeler, G.C. & Wheeler, J. 1972a: 41 (diagnosis); Brown, 1973b: 169 (genera and distribution); Wheeler, G.C. & Wheeler, J. 1976b: 61 (larvae, review and synthesis); Snelling, R.R. 1981: 401 (synoptic classification); Dazzini Valcurone & Fanfani, 1985: 1 (gastral glands); Wheeler, G.C. & Wheeler, J. 1985: 258 (synoptic classification); Billen, 1986: 173 (Dufour's gland); Billen, 1987: 278 (abdominal glands); Baroni Urbani & Wilson, 1987: 1 (*fossil Leptomyrmecini); Dlussky & Fedoseeva, 1988: 77 (synoptic classification); Hölldobler & Wilson, 1990: 9 (synoptic classification, genera keys); Baroni Urbani, et al. 1992: 316 (phylogeny); Shattuck, 1992b: 199 (higher classification, phylogeny); Shattuck, 1992c: 20 (revision of subfamily, genera key); Shattuck, 1994: 3 (catalogue); Bolton, 1994: 22 (diagnosis, synoptic classification, genera keys); Shattuck, 1995: 217 (phylogeny, genera); Bolton, 1995a: 1038 (census); Bolton, 1995b: 10 (catalogue); Wenseleers, Schoeters, et al., 1998: 121 (cloacal gland); Brandão, Baroni Urbani, et al. 1999: 411 (phylogeny, genera); Chiotis, et al. 2000: 108 (phylogeny, genera); Dlussky & Rasnitsyn, 2002: 416 (diagnosis for impression fossils); Bolton, 2003: 18, 80 (diagnosis, synopsis); Dubovikoff, 2005a: 91 (tribes of Dolichoderinae); Brady, et al. 2006: 18173 (phylogeny); Moreau, et al. 2006: 102 (phylogeny); Ward, et al. 2010: 342 (phylogeny, tribe-rank classification); Keller, 2011: 1 (morphology, phylogeny); Boudinot, 2015: 50 (diagnosis); Fisher & Bolton, 2016: 43 (diagnosis).

Regional and National Faunas with Keys

André, 1882a: 127 (Europe and Algeria); Nasonov, 1889: 50 (Russia); Forel, 1891b: 9 (Madagascar genera); Forel, 1895e: 460 (India and Sri Lanka); Bingham, 1903: 288 (India, Sri Lanka and Burma); Ruzsky, 1905b: 102 (Russian Empire); Bondroit, 1910: 488 (Belgium); Wheeler, W.M. 1910g: 560 (North America genera); Stitz, 1914: 77 (Central Europe); Gallardo, 1915: 34 (Argentina genera); Forel, 1915d: 40 (Switzerland); Arnold, 1915: 145 (South Africa); Donisthorpe, 1915d: 178 (Britain); Gallardo, 1916a: 12 (Argentina); Emery, 1916b: 208 (Italy); Wheeler, W.M. 1916m: 589 (U.S.A., Connecticut); Bondroit, 1918: 86 (France and Belgium); Gallardo, 1919b: 253 (Argentina genera); Soudek, 1922: 58 (Czechoslovakia); Stärcke, 1926: 117 (Netherlands); Karavaiev, 1927c: 271 (Ukraine); Donisthorpe, 1927b: 199 (Britain); Menozzi & Russo, 1930: 172 (Dominican Republic); Arnol'di, 1933b: 600 (Russia); Menozzi, 1933b: 90 (Israel genera); Karavaiev, 1936: 164 (Ukraine); Smith, M.R. 1937: 861 (Puerto Rico); Stitz, 1939: 209 (Germany); Kratochvíl, 1941: 94 (Central Europe); Novák & Sadil, 1941: 94 (Central Europe); Cole, 1942: 370 (U.S.A., Utah); Smith, M.R. 1943f: 309 (U.S.A. males); Buren, 1944a: 290 (U.S.A., Iowa); Smith, M.R. 1947f: 592 (U.S.A. genera); Creighton, 1950a: 330 (Nearctic); Kusnezov, 1956: 27 (Argentina); Brown, 1958h: 29 (New Zealand); Kusnezov, 1959: 40 (Neotropical genera); Gregg, 1963: 341 (U.S.A., Colorado); Wheeler, G.C. & Wheeler, J. 1963: 149 (U.S.A., North Dakota); Bernard, 1967: 246 (Western Europe); Wilson & Taylor, 1967: 17 (Polynesia); Bolton, 1973a: 329 (West Africa genera); Bolton & Collingwood, 1975: 3 (Britain); van Boven, 1970b: 24 (Netherlands); Snelling, R.R. & Hunt, 1976: 90 (Chile); Tarbinsky, 1976: 118 (Kyrghyzstan); van Boven, 1977: 123 (Belgium); Kutter, 1977c: 170 (Switzerland); Arnol'di & Dlussky, 1978: 546 (former European U.S.S.R.); Collingwood, 1978: 80 (Iberian Peninsula); Collingwood, 1979: 32 (Fennoscandia and Denmark); Greenslade, 1979: 28 (South Australia genera); Schembri & Collingwood, 1981: 420 (Malta); Allred, 1982: 443 (U.S.A., Utah); Baroni Urbani, 1984: 80 (Neotropical genera); Gösswald, 1985: 314 (Germany); Collingwood, 1985: 242 (Saudi Arabia); Wheeler, G.C. & Wheeler, J. 1986g: 55 (U.S.A., Nevada); Agosti & Collingwood, 1987b: 278 (Balkans); Dlussky, et al. 1990: 168 (Turkmenistan); Kupyanskaya, 1990: 152 (Far Eastern Russia); Morisita, et al., 1991: 2 (Japan); Atanasov & Dlussky, 1992: 49 (Bulgaria); Lattke, in Jaffe, 1993: 147 (Neotropical genera); Arakelian, 1994: 70 (Armenia); Wu, J. & Wang, 1995: 115 (China genera); Kupyanskaya, 1995: 331 (Far Eastern Russia); Collingwood & Agosti, 1996: 359 (Saudi Arabia); Seifert, 1996b: 161 (Central Europe); Skinner & Allen, 1996: 40 (Britain); Collingwood & Prince, 1998: 20 (Portugal); Kim & Kim, 1999: 18 (Korea); Shattuck, 1999: 26, 64 (Australia genera, synopsis); Andersen, 2000: 59 (northern Australia genera); Zhou, 2001b: 149 (China, Guangxi); Czechowski, et al. 2002: 134 (Poland); Aktaç & Radchenko, 2002: 54 (Turkey genera); Yoshimura & Onoyama, 2002: 425 (Japan genera, males); Mackay & Mackay, 2002: 221 (U.S.A., New Mexico); Palacio & Fernández, in Fernández, 2003d: 239 (Neotropical genera); Radchenko, 2005b: 186 (North Korea); Coovert, 2005: 102 (U.S.A., Ohio); Clouse, 2007b: 190 (Micronesia); Seifert, 2007: 147 (North and Central Europe); Fisher, 2009: 51 (Malagasy genera); Terayama, 2009: 196 (Taiwan); Heterick, 2009: 28 (south-western Australia genera); Boer, 2010: 14 (Benelux); Yoshimura & Fisher, 2011: 7 (Malagasy males key); Czechowski, et al. 2012: 342 (Poland); General & Alpert, 2012: 70 (Philippines genera key) ; Dlussky & Perfilieva, 2014: 433 (British Eocene species key); Baccaro, et al. 2015: 67, 126 (Brazil genera key, text).

References