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Genus: Pseudomyrmex   Lund, 1831 


Classification:

Taxonomic History (provided by Barry Bolton, 2017)

Extant: 137 species, 9 subspecies

Fossil: 13 species

Pseudomyrmex Lund, 1831b: 106. Type-species: Formica gracilis, by subsequent designation of Smith, 1952a PDF: 98. AntCat AntWiki

Taxonomic history

Pseudomyrmex in Pseudomyrmecinae: Smith, 1952a PDF: 98; all subsequent authors.
Genus Pseudomyrmex references
Smith, 1858a PDF: 153 (diagnosis); Roger, 1863b: 24 (catalogue); Mayr, 1863a PDF: 426, 451 (Leptalea, Pseudomyrma catalogues); Mayr, 1865 PDF: 24 (diagnosis); Mayr, 1870a PDF: 407 (Colombia + Panama (=New Grenada) species key); Smith, 1877b PDF: 58 (checklist); Cresson, 1887 PDF: 262 (U.S.A. catalogue); Dalla Torre, 1893 PDF: 55 (catalogue); Emery, 1921c: 28 (diagnosis, catalogue); Gallardo, 1932a PDF: 44 (Argentina species key); Enzmann, 1944 PDF: 62 (all species keys); Creighton, 1950a PDF: 79 (North America species key); Kempf, 1961a PDF: 373 (P. gracilis group, partial key); Kempf, 1972b PDF: 215 (Neotropical catalogue); Alayo, 1974: 9 (Cuba species key); Smith, 1979: 1345 (North America catalogue); Ward, 1985b PDF: 215 (Nearctic species key); Billen, 1986b: 173 (Dufour's gland); Ward, 1989a PDF: 407 (Pseudomyrmex oculatus group, key); Ward, 1989a PDF: 430 (Pseudomyrmex subtilissimus group, key); Ward, 1990 PDF: 469 (diagnosis, review of genus); Brandão, 1991 PDF: 373 (catalogue); Ward, 1992 PDF: 76 (Dominican Amber species key); Ward, 1993 PDF: 130 (swollen-thorn Acacia-associated species key); Bolton, 1994: 184 (synoptic classification); Bolton, 1995a PDF: 1052 (census); Bolton, 1995b: 370 (catalogue); Ward, 1999B PDF: 473 (Pseudomyrmex viduus group, and other Tachigali- and Triplaris-associated species key); Mackay & MacKay, 2002 PDF: 38 (U.S.A., New Mexico species key); Ward, 2017 10.11646/zootaxa.4227.4.3 PDF: 524 (species groups key; ferrugineus and goeldii groups species key); Ward & Branstetter, 2017 http://dx.doi.org/10.1098/rspb.2016.2569 PDF: 1 (ferrugineus group phylogeny)

Taxon Page Images:



Pseudomyrmex peperi is an obligate Acacia inhabitant. Here, a worker gathers a lipid-rich Beltian body from a leaf tip. The plant feeds the ants in exchange for protection from herbivores and competing plants. Armenia, Belize.

Not all of the thorns on a swollen-thorn Acacia house the ants' larvae, but those that do are heavily guarded. Here, Pseudomyrmex spinicola patrol a nest entrance, ready to use their stings if the photographer approaches too close. Chiriqui, Panama.
Images © Alex Wild.

Distribution:

   Genus is native to: Nearctic, Neotropical bioregions.

Australasia Region: Central, San Cristobal
Indomalaya Region: Indonesia, Java
Nearctic Region: Alabama, Arizona, Arkansas, Baja California, Baja California Sur, California, Chihuahua, Colorado, District of Columbia, Florida, Georgia, Hidalgo, Louisiana, Mississippi, México, New Mexico, North Carolina, Nuevo Leon, Puebla, Sonora, South Carolina, Texas, Zacatecas
Neotropical Region: Acre, Ahuachapán, Alajuela, Alta Verapaz, Amapá, Amazonas, Ancash, Anzoategui, Aragua, Argentina, Artemisa, Atacama, Atlántico Sur, Atlántida, Bahamas, Bahia, Barbados, Barinas, Belize, Beni, Boaco, Bocas del Toro, Bolivia, Bolívar, Brazil, Buenos Aires, Caaguazú, Camaguey, Campeche, Canal Zone, Canindeyú, Caquetá, Carabobo, Carazo, Cartago, Casanare, Catamarca, Cauca, Cayenne, Cayman Islands, Cayo, Chiapas, Chile, Chocó, Choluteca, Cochabamba, Colima, Colombia, Colonia, Comayagua, Cordillera, Corrientes, Costa Rica, Couva/Tabaquite/Talparo, Cuba, Cusco, Cuyuni-Mazaruni, Darien, Demerara, Distrito Capital, Distrito Federal, Distrito Nacional, Dominican Republic, Ecuador, El Progreso, El Salvador, Escuintla, Estelí, Exuma, Exumas, Formosa, Francisco Morazán, French Guiana, Goiás, Gracias a Dios, Granada, Granma, Great Abaco, Grenada, Guadeloupe, Guanacaste, Guatemala, Guayas, Guerrero, Guyana, Guárico, Haiti, Heredia, Herrera, Holguin, Honduras, Huehuetenango, Huila, Huánuco, Islas de la Bahía, Itapúa, Izabal, Jalisco, Jamaica, Jinotega, Jujuy, Jutiapa, Kemps Bay, Kuna Yala, La Guajira, La Libertad, La Paz, La Unión, Lambayeque, Lara, Lempira, León, Loreto, Los Rios, Los Santos, Madre de Dios, Madriz, Magdalena, Managua, Maranhão, Maria Trinidad Sanchez, Marsh Harbour, Masaya, Matagalpa, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Misiones, Morelos, Morona Santiago, Mérida, Napo, Nayarit, Neembucú, New Providence, Nicaragua, Oaxaca, Ocotepeque, Olancho, Orange Walk, Orellana, Ouest, Panama, Panamá Oeste, Para, Paraguarí, Paraguay, Pastaza, Peru, Petén, Pichincha, Pinar del Río, Portuguesa, Provincia de Napo, Pte. Hayes, Puerto Rico, Puntarenas, Quintana Roo, Región Autónoma del Atlántico Norte, Región Autónoma del Atlántico Sur, Retalhuleu, Rio Grande do Sul, Rio de Janeiro, Rivas, Rondônia, Rupununi, Río San Juan, Sacatepéquez, Saint Andrew, Saint Elizabeth, Saint James, Salta, San Andrés y Providencia, San Blas, San José, San Luis Potosi, San Pedro, San Salvador, Santa Catarina, Santa Cruz, Santa Rosa, Santiago de Cuba, Sao Paulo, Sinaloa, Sipaliwini, Sololá, Sonsonate, Suchitepéquez, Sucumbios, Suriname, Tabasco, Tamaulipas, Territorio Federal Amazonas, Tolima, Trinidad and Tobago, Trujillo, Tucumán, Tunapuna-Piarco, Upper Demerara-Berbice, Uruguay, Valle, Valle de Cauca, Valle del Cauca, Valparaíso, Venezuela, Veracruz, Veraguas, Villa Clara, West Demerara, Westmoreland, Westmorland, Yaracuy, Yucatán, Zacapa, Zulia
Oceania Region: Hawaii
Palearctic Region: Algeria, Georgia

Biology:

Most species of Pseudomyrmex nest in dead twigs or stems of woody plants. Some have become specialized inhabitants of live plant domatia, such as the acacia-ants that occupy swollen-thorn acacias.

Identification:

Worker: antennae 12-segmented; mandibles with proximal tooth on basal margin; eyes large and elongate, more than 1.5 times as long as wide. Other characters as in subfamily.

Notes:

The genus is predominantly Neotropical, with only two species occurring in California.

References:

Kempf (1958f, 1960a, 1961a, 1967c); Ward (1985b, 1989a, 1992, 1993, 1999).

Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Pseudomyrmex   Wild, A. L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)., Zootaxa 1622, pp. 1-55: 41, (download) 41 21367
Pseudomyrmex   Wild, A. L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)., Zootaxa 1622, pp. 1-55: 41, (download) 41 21367
Pseudomyrmex   Wild, A. L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)., Zootaxa 1622, pp. 1-55: 41, (download) 41 21367
Pseudomyrmex   Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., Zootaxa 936, pp. 1-68: 39, (download) 39 21008


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