Neoponera villosa

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Neoponera villosa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Genus: Neoponera
Species: N. villosa
Binomial name
Neoponera villosa
(Fabricius, 1804)

Pachycondyla villosa casent0104739 profile 1.jpg

Pachycondyla villosa casent0104739 dorsal 1.jpg

Specimen labels

Synonyms

A common species that is found in a variety of habitats.

At a Glance • Polygynous  • Tandem running  

Identification

From Mackay and Mackay (2010): Neoponera villosa vies with Pachycondyla harpax for being the most common and widely distributed member of ponerine in the New World. Neoponera villosa is much larger than P. harpax (total length of the worker, female and male of P. harpax < 10 mm). Workers of N. villosa can be easily confused with Neoponera holcotyle, Neoponera theresiae, and Neoponera foetida. The side of the petiole of N. villosa is without any evidence of striae, which are present in the other three species. The first two of these three species are also smaller (total length < 11 mm), N. foetida is approximately the same size. Neoponera foetida also has horizontal striae on the posterior face of the petiole, which are lacking in N. villosa. Neoponera villosa could also misidentified as Neoponera bugabensis, as both lack striae on the sides and posterior face of the petiole. It is much larger (total length of workers of N. bugabensis is < 10 mm) and the legs are dark red (ferrugineous red in color in N. bugabensis).

It is easy to confuse this common species with several other species. For example, smaller specimens with striae on the dorsum of the head between the eyes are Neoponera lineaticeps, specimens with a rectangular shaped petiole, a concave pygidium with horizontal lateral striae are Pachycondyla impressa, specimens with two lateral angulate processes on the pygidium are Pachycondyla crassinoda. It is mostly dull in color, not shiny black as in the relatively large Neoponera commutata, Neoponera laevigata and Neoponera marginata. Neoponera fisheri is a similar size, but lacks the preocular and pronotal carinae.

It is similar to the closely related Neoponera curvinodis and Neoponera inversa, but can be separated from both species by the straight anterior face of the petiole (concave in the other two species). Mariano et al. (2000) compare the cytogenetics of N. villosa and N. inversa.

The males of three common species are very similar: N. villosa, Pachycondyla striata and P. impressa. Neoponera villosa males can be separated from the males of the other two species by the presence of the relatively large sharp subpetiolar process, which is blunt and rounded or only angulate anteriorly in the other two species. The erect hairs of N. villosa are not as abundant as they are in P. striata and the petiole is not covered with rugae as it is in P. impressa. The males of the closely related N. curvinodis and N. inversa are unknown, but it could be expected that the anterior faces of the petioles of these two species would be concave.

Fernandes et al. (2014) - Worker: Anterior border of clypeus concave medially; anterior face of petiole vertical and broadly convex on dorsum. Male: Posteropropodeum strongly striate; anterior face of petiole vertical, petiole robust with posterolateral carina.

Neoponera villosa can be differentiated from other species of the Neoponera foetida species complex by the anterior margin of its clypeus, which is concave medially without striae, and by the anterior face of the petiole, which is vertical and convex with a broadly rounded posterior face, characters absent in the other species. Neoponera curvinodis can be differentiated by the shape of the petiole, which has a concave anterior face, while that in N. villosa is vertical. Neoponera theresiae can be differentiated by striae on the side and dorsum of the petiole, characters not observed in N. villosa.

Neoponera villosa has a wide distribution in the New World, occurring from the southern United States to Argentina. The species shows little variation in color, although specimens collected nearer to the equator circle have the petiole, mesosoma, gaster, and legs darker brown. Body size is another variable character, but is not correlated with any changes in morphological characters. Diet and age of nest are known to influence body size in many ant species.

Keys including this Species

Distribution

Southern United States through South America, Trinidad, Puerto Rico (Mackay and Mackay 2010).

Latitudinal Distribution Pattern

Latitudinal Range: 31.802383° to -28.05055556°.

     
North
Temperate 		North
Subtropical 		Tropical South
Subtropical 		South
Temperate

Distribution based on Regional Taxon Lists

Nearctic Region: United States.
Neotropical Region: Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Suriname, Trinidad and Tobago, Venezuela.

Distribution based on AntMaps

AntMapLegend.png

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
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Habitat

This common species is found in a variety of habitats, ranging from grasslands (Quiroz-Robledo and Valenzuela-González, 1995), primary forest (Roth et al., 1994), secondary rain forest, tropical rain forest, wet tropical rain forest, lowland forest, mangrove, bosque medio, the edge of natural forest, gallery forest, epiphyte forest, open grassy areas with a few trees, area with scattered oaks, to highly disturbed areas such as cacao plantations and even dry scrub forest. Elevations range from 1.5 - 1100 m. Wild (2002) includes undisturbed primary tall forest, gallery forest, scrub forest, campo cerrado [scrub vegetation], pastures, lawns and orchards. This species has been collected in caves near the entrances (Reddell and Cokendolpher, 2001). (Mackay and Mackay 2010)

Biology

Sanz-Veiga et al. (2017) - This species was observed visiting the extrafloral nectaries of Tocoyena formosa plants occurring in a southeastern Brazilian cerrado study-site.

From Mackay and Mackay (2010): This species nests in wood, including dead, hard trees, dead branches and trunks, stumps, under bark and even in dead logs on the ground. It is one of the rare Ponerinae that nests in trees (Dejean and Corbara, 1990b). Dealate queens sometimes establish their first nests in hollow twigs. Nests usually start cooperatively with two or more queens who establish a dominance order with a division of labor (D’Ettorre et al., 2005). One nest was at the base of small tree.

Brood was collected in a nest in July (Ecuador). Males were found in nests in June (Nicaragua), July (Ecuador) and December (Texas). Winged females have been collected in January and March (Costa Rica), March - April (Guatemala), June (USA), July (USA, Panamá), November (British Guyana) and December (USA, Perú, Costa Rica). Males have been collected in May (Costa Rica) and August (Honduras). Dealate females were collected in February (Costa Rica), March (México), May (Costa Rica), July (México, Panamá), August (Brasil) and September (Texas, Brasil).

It is a common arboreal ant in Brasil (De Medeiros et al., 1995) and also forages commonly on the forest floor. Workers are predaceous (Maes, 1989; Dejean et al., 1990) and prey on termites (Wild, 2005). Foragers also feed on nectar (Paul and Roces, 2003) and can carry droplets of liquids between their mandibles (Hölldobler, 1985). They can be found in forest leaf litter, on trees, at baits on the soil surface and in pitfall traps.

They nest almost exclusively in bromeliad epiphytes (Aechmea bracteata) in the state of Quintana Roo, México (Dejean, 1990; Dejean and Olmsted, 1997) and are occasionally found in Cecropia sp., especially in Cecropia hispidissima [Cecropiaceae]. Wheeler (1942) lists this species as nesting in pseudobulbs of Schomburgkia tibicinis [Orchidaceae]. This species lives in the epiphytes Tillandsia bulbosa [Bromeliaceae] and T. streptophylla (Dejean et al., 1995). It nests in peripheral cavities of trees of Bursera simaruba [Burseraceae] and protects it from attack from the leaf cutting ant Atta cephalotes (Dejean et al., 1992). It collects nectar from the mistletoe Phoradendron tomentosum [Loranthaceae] in southern Texas (Whittaker, 1984). Fagundes et al. (2010) report it nesting in bamboo.

Zara et al. (2002) did chemical analysis of the different larval instars and (2003) discussed the cytochemical and chemical analysis of the fat bodies of this species. Caetano (1988) described the digestive and excretory system. Lipids are the first materials to be deposited in the oocytes (Caperucci and Camargo-Mathias, 2006). The size of the corpora allata in females, located dorsolaterally to the esophagus, is inversely related to the development of the ovaries (Camargo and Caetano, 1995b).

Neoponera villosa is eaten by the leptodactylid “veragua robber” frog, Eleutherodactylus biporcatus in Nicaragua (Wild, 2005). It is the prey of the army ant Eciton mexicanum. Neoponera villosa is mimicked by the salticid spider Zuniga magna (Reiskind, 1977), but only the female (McIver and Stonedahl, 1993). The male of the spider mimics the ant Pseudomyrmex gracilis (McIver and Stonedahl, 1993). One colony was nesting together with an ant of the genus Cephalotes in Colombia. It apparently has a positive relationship with the carpenter ant Camponotus atriceps (Majer et al., 1994, listed as C. abdominalis).

DaRocha et al. (2015) studied the diversity of ants found in bromeliads of a single large tree of Erythrina, a common cocoa shade tree, at an agricultural research center in Ilhéus, Brazil. Forty-seven species of ants were found in 36 of 52 the bromeliads examined. Bromeliads with suspended soil and those that were larger had higher ant diversity. Neoponera villosa was found in 13 different bromeliads but was associated with twigs and bark cavities, rather than suspended soil or litter, of the plant.

Dejain et al. (2018) found this species nesting in Aechmea bracteata, a large tank bromeliad (leaves ca. 1-m-long; inflorescences up to 1.7-m-long). Each plant forms numerous shoots, with each bearing multiple reservoirs within their leaves and a central dry cavity where ants can nest. Other ants were also found, and both the presence of ants and the ant species present was found to be correlated with changes in the aquatic macroinvertebrate communities within the plants' reservoirs. Neoponera villosa was found in 33 of the 92 plants sampled. The study was carried out in an inundated forest dominated by 10-m-tall Metopium brownei (Anacardiaceae). This forest was located in southern Quintana Roo, Mexico (18.42678 N; 88.80438 W; 120 meters a.s.l).

While this species has been reported to nest in ant gardens (Campbell et al., 2022; Marini-Filho, 1999) it does not seem to be a true ant-garden taxon (i.e., one that is able to initiate ant gardens or is restricted to ant gardens) and is more likely to be a secondary resident or opportunistic ant-garden nester.

Behavior

This is a very aggressive ant, with a painful sting (feels like being stabbed with a hot needle). The sharp pain mostly subsides after about a half an hour, but remains tender for a few days. They are avoided by the army ant Eciton burchellii (García-Pérez, 1989).

Forty percent of founding colonies are pleometrotic, with two (24%) or three (16%) nest females and may lead to polygynous nests (Trunzer et al., 1998, probably refers to Neoponera inversa - see Kolmer and Heinze, 2000b). The females leave the nest to forage before the first workers are developed (Trunzer et al., 1998). Workers lay eggs which are utilized as food by the colony (Camargo Mathias and Caetano, 1995a). The queens mate with two or more males and the queens that cooperatively form new nests are not closely related (Kellner et al., 2007).

Workers in queenless colonies form a dominance hierarchy, using “boxing” and biting (Heinze et al., 1996). The top ranking individuals lay the most eggs, but lower ranking individuals also lay eggs, which result in the production of males (Trunzer et al., 1999). The dominant workers eat the eggs of other workers. The presence of larvae reduces the numbers of eggs in the nest, by feeding on the eggs and fewer eggs are laid when larvae are present (Heinze et al., 1996).

Individual foragers show strong fidelity to a particular area, but forage individually, without recruitment, although tandem running has been observed during nest relocations (Fresneau, 1985). Neoponera villosa responds differently to different prey types and does not always use the sting (Dejean and Corbara, 1990b). Dejean et al. (1990), discuss the behavior of Neoponera villosa when foragers prey on rhinotermitid termites. They move their antennae posteriorly and lift as many legs as possible from the soil surface to avoid contact with the termites. Foragers follow four types of paths including classical exploration, area-concentrated searching, reserve behavior and homing (Dejean and Corbara, 1998).

Workers demonstrate polyethism, with tasks changing during their development (Pérez-Bautista et al., 1985).

Association with Other Organisms

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  • This species is a host for the phorid fly Apocephalus constrictus (a parasite) (phorid.net) (attacked).
  • This species is a host for the phorid fly Apocephalus crassilatus (a parasite) (Brown et al., 2015) (injured).
  • This species is a host for the phorid fly Apocephalus crassilatus (a parasite) (phorid.net) (attacked).
  • This species is a host for the phorid fly Apocephalus globosus (a parasite) (Brown et al., 2015) (injured).
  • This species is a host for the phorid fly Apocephalus globosus (a parasite) (phorid.net) (attacked).
  • This species is a host for the phorid fly Apocephalus paraponerae (a parasite) (Brown et al., 2015) (injured).
  • This species is a host for the phorid fly Dohrniphora sp (not D. longi-gp) (a parasite) (Brown et al., 2015) (injured).
  • This species is a prey for the phorid fly Dohrniphora sp. (a predator) (Quevillon, 2018).
  • This species is a host for the nematode Mermithidae (unspecified "Mermix") (a parasite) in Neotropics (Wheeler, 1928; Laciny, 2021).
  • This species is a host for the syrphid fly Hypselosyrphus trigonus (a parasitoid) (Quevillon, 2018) (encounter mode independent; direct transmission; transmission outside nest).
  • This species is a host for the fungus Ophiocordyceps australis (a parasitoid) (Quevillon, 2018) (encounter mode primary; direct transmission; transmission outside nest).
  • This species is a host for the fungus Ophiocordyceps kniphofioides (a parasitoid) (Quevillon, 2018) (encounter mode primary; direct transmission; transmission outside nest).

Life History Traits

  • Mean colony size: 500 (Lachaud et al., 1984; Beckers et al., 1989)
  • Foraging behaviour: solitary forager (Lachaud et al., 1984; Beckers et al., 1989)

Castes

Worker

Images from AntWeb

Pachycondyla villosa casent0178188 head 1.jpgPachycondyla villosa casent0178188 profile 1.jpgPachycondyla villosa casent0178188 dorsal 1.jpgPachycondyla villosa casent0178188 label 1.jpg
Worker. Specimen code casent0178188. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by ALWC, Alex L. Wild Collection.
Pachycondyla villosa casent0178688 head 1.jpgPachycondyla villosa casent0178688 profile 1.jpgPachycondyla villosa casent0178688 dorsal 1.jpgPachycondyla villosa casent0178688 label 1.jpg
Worker. Specimen code casent0178688. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by MIZA, Maracay, Venezuela.
F N villosa 84 worker.jpg
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Queen

Images from AntWeb

Pachycondyla villosa casent0178189 head 1.jpgPachycondyla villosa casent0178189 profile 1.jpgPachycondyla villosa casent0178189 dorsal 1.jpgPachycondyla villosa casent0178189 label 1.jpg
Queen (alate/dealate). Specimen code casent0178189. Photographer April Nobile, uploaded by California Academy of Sciences. Owned by ALWC, Alex L. Wild Collection.
F N villosa 91 queen.jpg
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Male

F N villosa 99 male.jpgF Neoponera 106 male genitalia.jpg
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Nomenclature

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

  • villosa. Formica villosa Fabricius, 1804: 409 (w.) SURINAME.
    • Type-material: lectotype queen (by designation of Fernandes, et al. 2014: 155).
    • Type-locality: Suriname: Essequibo.
    • [Note: Fernandes, et al. 2014: 155, report that data on the specimen is, “Essequibo, Smidt, Mus. Sehestedt”. Original description has (in full), “Habitat in America meridionali Dom. Smidt. Mus. Dom. de Sehestedt”, without indication of caste of specimen. Essequibo is most probably the old name for part of Suriname, rather than the river of that name.]
    • Type-depository: ZMUC.
    • Roger, 1861a: 2 (w.q.); Wheeler, G.C. & Wheeler, J. 1952c: 615 (l.); Petralia & Vinson, 1980: 378 (l.); Fernandes, et al. 2014: 159 (m.).
    • Combination in Ponera: Lepeletier de Saint-Fargeau, 1835: 192;
    • combination in Pachycondyla: Mayr, 1862: 720; Brown, in Bolton, 1995b: 311;
    • combination in Neoponera: Emery, 1901a: 43; Schmidt, C.A. & Shattuck, 2014: 152.
    • Status as species: Lepeletier de Saint-Fargeau, 1835: 192; Roger, 1861a: 1 (redescription); Mayr, 1862: 720; Roger, 1862c: 287; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Mayr, 1870a: 397 (in key); Emery, 1878a: ix (in list); Forel, 1886a: 217; Emery, 1890a: 59, 74 (in key); Emery, 1890b: 43; Cameron, 1891: 91; Dalla Torre, 1893: 35; Emery, 1894k: 49; Forel, 1895b: 115; Emery, 1896h: 625; Pergande, 1896: 873; Forel, 1899c: 14; Forel, 1901f: 353; Wheeler, W.M. 1905b: 120; Emery, 1906c: 114; Forel, 1907a: 7; Forel, 1907e: 1; Wheeler, W.M. 1908a: 124; Wheeler, W.M. 1908e: 403 (redescription); Forel, 1908c: 345; Forel, 1909a: 252; Wheeler, W.M. 1910g: 561; Emery, 1911d: 72; Forel, 1912c: 36; Mann, 1916: 412; Gallardo, 1918b: 56 (redescription); Luederwaldt, 1918: 35; Forel, 1921b: 133; Santschi, 1921g: 86; Borgmeier, 1923: 68; Wheeler, W.M. 1923a: 2; Wheeler, W.M. 1925a: 5; Borgmeier, 1934: 96; Wheeler, W.M. 1938: 251; Wheeler, W.M. 1942: 156; Creighton, 1950a: 43; Smith, M.R. 1951a: 785; Kusnezov, 1953b: 336; Smith, M.R. 1958c: 111; Kusnezov, 1969: 36 (in key); Kempf, 1970b: 326; Kempf, 1972a: 163; Kempf & Lenko, 1976: 54; Smith, D.R. 1979: 1340; Bolton, 1995b: 311; Wild, 2002: 16; Wild, 2007b: 40; Mackay, Mackay, et al. 2008: 200; Mackay & Mackay, 2010: 571 (redescription); Branstetter & Sáenz, 2012: 263; Fernandes, et al. 2014: 154 (redescription); Bezděčková, et al. 2015: 124; Feitosa, 2015c: 99; Fernández & Guerrero, 2019: 535.
    • Senior synonym of bicolor: Roger, 1861a: 1; Roger, 1862c: 288; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Dalla Torre, 1893: 35; Forel, 1895b: 115; Pergande, 1896: 873; Forel, 1899c: 14; Wheeler, W.M. 1908a: 124; Emery, 1911d: 72; Gallardo, 1918a: 57; Borgmeier, 1923: 68; Creighton, 1950a: 43; Kempf, 1972a: 163; Smith, D.R. 1979: 1340; Bolton, 1995b: 311; Mackay & Mackay, 2010: 571; Fernandes, et al. 2014: 155.
    • Senior synonym of pedunculata: Roger, 1861a: 1; Roger, 1862c: 288; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Dalla Torre, 1893: 35; Forel, 1895b: 115; Pergande, 1896: 873; Forel, 1899c: 14; Wheeler, W.M. 1908a: 124; Emery, 1911d: 72; Gallardo, 1918a: 57; Borgmeier, 1923: 68; Creighton, 1950a: 43; Kempf, 1972a: 163; Smith, D.R. 1979: 1341; Bolton, 1995b: 311; Mackay & Mackay, 2010: 571; Fernandes, et al. 2014: 155.
    • Senior synonym of pilosa: Roger, 1861a: 1; Roger, 1862c: 288; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Dalla Torre, 1893: 35; Pergande, 1896: 873; Forel, 1899c: 14; Emery, 1911d: 72; Gallardo, 1918a: 57; Borgmeier, 1923: 68; Creighton, 1950a: 43; Kempf, 1972a: 163; Smith, D.R. 1979: 1340; Bolton, 1995b: 311; Mackay & Mackay, 2010: 571; Fernandes, et al. 2014: 155.
    • Distribution: Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Suriname, Trinidad, U.S.A., Venezuela.
  • bicolor. Ponera bicolor Guérin-Méneville, 1844a: 424 (w.) MEXICO (no state data).
    • Type-material: holotype worker.
    • Type-locality: Mexico: (no further data).
    • Type-depository: MNHN.
    • Status as species: Smith, F. 1858b: 100.
    • Junior synonym of villosa: Roger, 1861a: 1; Roger, 1862c: 288; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Dalla Torre, 1893: 35; Forel, 1895b: 115; Pergande, 1896: 873; Forel, 1899c: 14; Wheeler, W.M. 1908a: 124; Emery, 1911d: 72; Gallardo, 1918a: 57; Borgmeier, 1923: 68; Creighton, 1950a: 43; Kempf, 1972a: 163; Smith, D.R. 1979: 1340; Bolton, 1995b: 303; Mackay & Mackay, 2010: 571; Fernandes, et al. 2014: 155.
  • pedunculata. Ponera pedunculata Smith, F. 1858b: 96, pl. 6, fig. 25 (w.) BRAZIL (Rio de Janeiro).
    • Type-material: holotype worker.
    • Type-locality: Brazil: Rio (de Janeiro), Constancia (no collector’s name).
    • Type-depository: BMNH.
    • [Note: another specimen in BMNH, previously indicated as “type”, is labelled “Ega. 58/6” (= Brazil: Tefé) and therefore is not type-material. A single specimen in OXUM has “pedunculata” on a label but no other data. Both these specimens match the holotype of pedunculata.]
    • Status as species: Smith, F. 1862b: 31.
    • Junior synonym of villosa: Roger, 1861a: 1; Roger, 1862c: 288; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Dalla Torre, 1893: 35; Forel, 1895b: 115; Pergande, 1896: 873; Forel, 1899c: 14; Wheeler, W.M. 1908a: 124; Emery, 1911d: 72; Gallardo, 1918a: 57; Borgmeier, 1923: 68; Creighton, 1950a: 43; Kempf, 1972a: 163; Smith, D.R. 1979: 1341; Bolton, 1995b: 308; Mackay & Mackay, 2010: 571; Fernandes, et al. 2014: 155.
  • pilosa. Ponera pilosa Smith, F. 1858b: 95 (m.) BRAZIL (Amazonas).
    • Type-material: holotype male.
    • Type-locality: Brazil: Villa Nova (no collector’s name).
    • Type-depository: BMNH.
    • [Note: there is a second male, in OXUM, mounted as the holotype but without the correct data labels.]
    • Junior synonym of villosa: Roger, 1861a: 1; Roger, 1862c: 288; Roger, 1863b: 18; Mayr, 1863: 440; Mayr, 1865: 65; Dalla Torre, 1893: 35; Pergande, 1896: 873; Forel, 1899c: 14; Emery, 1911d: 72; Gallardo, 1918a: 57; Borgmeier, 1923: 68; Creighton, 1950a: 43; Kempf, 1972a: 163; Smith, D.R. 1979: 1340; Bolton, 1995b: 308; Mackay & Mackay, 2010: 571; Fernandes, et al. 2014: 155.

Type Material

Central America; México; Brasil, Villa Nova; Brasil, Rio Constantia. Worker seen, was compared to type by Brown, MCZC (Mackay and Mackay 2010)

The following notes on F. Smith type specimens have been provided by Barry Bolton (details):

Ponera pedunculata

Holotype worker in The Natural History Museum. Labelled “Rio. Constancia.”

A specimen in The Natural History Museum previously indicated as type is labelled “Ega. 58/6” (= Brazil) and therefore is not type-material. A specimen in Oxford University Museum of Natural History has “pedunculata” on a label but no other data. All specimens represent a single species.

Ponera pilosa

Holotype male in The Natural History Museum. Labelled “Brazil. Villa Nova.” There is another male in Oxford University Museum of Natural History, mounted as the holotype but without the correct data labels.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

From Mackay and Mackay (2010) - Workers of this species are large (total length about 15 mm) black ants with black or reddish brown tibiae. The anterior border of the clypeus is convex but is concave medially. The malar carina is well developed and sharp, shining and well marked against a background of golden appressed pubescence. The maximum diameter the eye is about one fourth the length of the side of the head and is located more than one maximum diameter from the insertion of the mandible (side view). The scape extends approximately the first two funicular segments past the posterior lateral corner of the head. The carina on the pronotal shoulder is sharp and slightly overhangs the side of the pronotum. The metanotal suture is well marked on the dorsum of the mesosoma and depresses the level slightly below the remainder of the mesosoma. The propodeal spiracle is slit-shaped. The posterior face of the propodeum is separated from the side of the propodeum by a definite carina. The petiole is thick when viewed in profile, with a vertical anterior face and a convex broadly rounded posterior face that meets the anterior face at the anterior point of the apex of the petiole. The posterior lateral edges of the petiole nearly form carinae. The stridulatory file is well developed on the second pretergite.

Erect hairs are abundant on most surfaces, including the dorsal and ventral surfaces of the head, the antennal scapes, the posterior border of the head, the dorsum of the mesosoma, dorsum of the petiole, all surfaces of the gaster, the hairs on the legs are either erect or suberect. Appressed golden pubescence is abundant on most surfaces, especially the mesosoma, petiole and gaster.

The head is covered with coarse punctures, which are somewhat aligned in rows. The dorsum of the mesosoma has finer punctures, and surfaces which are not hidden by appressed pubescence are glossy and shiny. The side of the mesosoma is mostly punctate, but the surfaces are nearly completely hidden by appressed pubescence. The petiole is finely punctate with surfaces not hidden by appressed pubescence, being shining. The dorsum of the gaster is punctate, but most surfaces are densely covered with appressed pubescence.

Fernandes et al. (2014) - (n = 261): SL: 2.60-2.80; HW: 2.67-2.77; HL: 2.89-2.98; PW: 1.79-1.84; WL: 4.50-4.59; NLd: 0.96-1.02; NWd: 1.29-1.36; NHl: 1.01-1.10; NLl: 1.30-1.40; NIl: 127.27-128.71; SI: 97.37-101.08.

Queen

Fernandes et al. (2014) - (n = 94): SL: 2.90-3.10; HW: 3.01-3.09; HL: 3.20-3.34; PW: 2.28-3.38; WL: 5.27-5.70; NLd: 1.22-1.34; NWd: 1.58-1.84; NHl: 1.06-1.19; NLl: 1.20-1.45; NIl: 113.20-121.84; SI: 96.34-100.32.

Redescription of queen type: SL: 3.03; HW: 3.08; HL: 3.29; PW: 2.35; WL: 5.73; NLd: 1.31; NWd: 1.81; NHl: 1.18; NLl: 1.43; NIl: 121.18; SI: 98.37.

Head: mandibles with 15 teeth on masticatory border; ocelli well developed; malar carina reaching eye; clypeus concave medially.

Mesosoma: pronotal carina sharp and well developed; scutum large and thickened; scutellum reduced; scutello-metanotal groove well developed; deep metanotal-propodeal grooves; propodeal carina poorly developed in dorsal view, with posteropropodeum nearly concave between carina in dorsal view.

Petiole: anterior face vertical, lateral face with posterolateral carina evident in lateral view; dorsal face broadly convex and rounded; sternopetiolar process forming anterior projection separated by carina.

Gaster: sternopostpetiolar process without carina.

Sculpture, pilosity and color: integument of head black and brown, finely punctate; scape covered by golden pubescence; clypeus with long and short erect golden hairs; mandibles opaque, with few punctures; masticatory border with short golden hairs and fine striation on dorsal surface; integument of mesosoma black and brown, abundant erect golden and silver hairs and pubescence distributed on all surfaces, more evident on dorsum; legs brown, covered with sparse silver and golden pubescence; anterior, medial and posterior basitarsi and tarsi brown, dense golden pubescence on ventral surface; medial and posterior tarsi with row of golden setae on ventral surface; tarsal claws not armed with tooth; arolium brown; integument of petiole brown below, black above, with erect golden hairs abundant on all surface, most evident on dorsum; integument of gaster brown weakly punctate, erect golden hairs present on dorsum and appressed gold and silver pubescence present on all surfaces; tergites covered by golden pubescence and long golden hairs; hypopygidium and pygidium punctate. Appressed golden and silver pubescence distributed on most surfaces, especially on mesosoma, petiole and gaster. Erect golden hairs abundant on most surfaces, including the dorsal and ventral surfaces of the head, the antennal scapes, the posterior border of the head, the dorsum of the mesosoma, dorsum of the petiole, all surfaces of the gaster. The hairs on the legs either erect or suberect.

From Mackay and Mackay (2010): The female is larger (about 17 mm total length) than the worker, usually black with reddish brown femora and appearing somewhat golden due to the abundant appressed pubescence. The anterior border of the clypeus is slightly concave medially and the malar carina is well developed. The distance between the insertion of the mandible and the anterior border of the clypeus is greater than the maximum diameter of the eye (side view). The ocelli are well developed and the scape extends slightly past the posterior lateral corner. The pronotal carina is very well developed, sharp and overhangs the side of pronotum. The metanotal suture is well developed and forms a well-defined metanotum. The petiole is shaped as in the worker. The wing is similar to that of other members of the genus.

The pilosity and sculpture are similar to that of the worker.

Male

From Mackay and Mackay (2010) - The male is a large (total length 14 mm) predominantly black specimen. The anterior border of the clypeus is slightly concave. The ocelli are moderately large (maximum diameter of the median ocellus is 0.19 mm, located 0.19 mm from the lateral ocellus, whose diameter is 0.21 mm). The pronotal shoulder is swollen, the propodeal spiracle is slit-shaped. The petiole is thick when viewed in profile with a nearly straight anterior face and a broadly rounded posterior face, which form a blunt rounded apex. The subpetiolar process consists of an angulate lobe, gradually diminishing in size posteriorly. The stridulatory file is present on the second pretergite, the arolia are well developed.

Erect hairs are moderately abundant on the head, mesosoma, petiole and gaster; appressed golden pubescence is dense on most surfaces.

Most surfaces are finely coriaceous and moderately shining.

The males come in two color forms: completely black and black with yellow legs and a yellow gaster. It is possible that two species are involved.

Fernandes et al. (2014) - (n = 65): HW: 1.92-2.01; HL: 1.50-1.55; PW: 1.40-1.48; WL: 4.00-4.12; NLd: 0.65-0.70; NWd: 0.70-0.75; NLl: 0.50-0.54; NHl: 0.85-0.93; NIl: 58.06-58.82.

Karyotype

  • n = 17, 2n = 34, karyotype = 12M+22A (Brazil) (Mariano et al., 1999; Mariano et al., 2007; Mariano et al., 2011; Mariano et al., 2015) (as Pachycondyla villosa).

Etymology

The name of this species is derived from the Latin word villosus, meaning hairy, referring to the condition of this species. (Mackay and Mackay 2010)

References

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