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Genus: Liometopum   Mayr, 1861 


Classification:

Taxonomic History (provided by Barry Bolton, 2017)

Extant: 7 species

Fossil: 20 species

Liometopum Mayr, 1861 PDF: 38. Type-species: Formica microcephala, by monotypy. AntCat AntWiki

Taxonomic history

Liometopum in Formicinae: Mayr, 1861 PDF: 38 [Formicidae]; Mayr, 1862 PDF: 653 (in key) [Formicidae]; Mayr, 1865 PDF: 9 [Formicidae]; CANNOT FIND REFERENCE WITH ID 132986 : 168 [Formicidae].
Liometopum in Dolichoderinae: Forel, 1878c PDF: 383 [Dolichoderidae]; Emery & Forel, 1879a: 454 [Dolichoderidae]; Dalla Torre, 1893 PDF: 163; Emery, 1895l PDF: 771; Forel, 1899B: 104; Wheeler, 1910a: 142.
Liometopum in Dolichoderidae: Ashmead, 1905c PDF: 384.
Liometopum in Dolichoderinae, Tapinomini: Emery, 1913a PDF: 19; Wheeler, 1915i PDF: 95; Forel, 1917 PDF: 248; Bondroit, 1918 PDF: 87; Wheeler, 1922: 688; Carpenter, 1930 PDF: 46; subsequent authors except those below; then Jaffe, 1993: 9; Ward, Brady, et al. 2010: 361.
Liometopum in Dolichoderinae, Liometopini: Dlussky & Fedoseeva, 1988: 77.
Liometopum in Dolichoderinae, Dolichoderini: Shattuck, 1992c PDF: 121; Bolton, 1994: 26; Bolton, 2003 PDF: 89.
Genus Liometopum references
Roger, 1863b: 14 (catalogue); Mayr, 1863a PDF: 427 (catalogue); Mayr, 1865 PDF: 9 (diagnosis); Forel, 1878c PDF: 383 (diagnosis); André, 1882b: 220 (Europe & Algeria species); Cresson, 1887 PDF: 258 (U.S.A. catalogue); Dalla Torre, 1893 PDF: 162 (catalogue); Bingham, 1903 PDF: 289 (diagnosis); Wheeler, 1905h PDF: 322 (North America species); Emery, 1913a PDF: 19 (diagnosis, catalogue); Creighton, 1950a PDF: 338 (North America species key); Chapman & Capco, 1951 PDF: 192 (Asia checklist); Gregg, 1963: 438 (U.S.A., Colorado species key); Bernard, 1967a PDF: 253 (diagnosis); Smith, 1979: 1417 (North America catalogue); Wheeler & Wheeler, 1986g PDF: 55 (U.S.A., Nevada species key); Shattuck, 1992c PDF: 121 (diagnosis, review of genus); Shattuck, 1994 PDF: 128 (catalogue); Bolton, 1995a PDF: 1050 (census); Bolton, 1995b: 247 (catalogue); Mackay & MacKay, 2002 PDF: 232 (U.S.A., New Mexico species key); Del Toro, Pacheco & MacKay, 2009 PDF: 306 (all species revision, key); Dlussky, Rasnitsyn & Perfilieva, 2015 PDF (diagnosis for fossil imprints).

Taxon Page Images:



A busy trail of velvety tree ants (Liometopum occidentale). Solano County, California, USA
Image © Alex Wild.

Distribution:

(based on species list records)   Genus is native to: Indomalaya, Nearctic, Neotropical, Palearctic bioregions.

Indomalaya Region: Arunachal Pradesh, Asia, Assam, Hubei, India, Meghalaya, Southern Asia
Nearctic Region: Arizona, British Columbia, California, Chihuahua, Colorado, Durango, Hidalgo, Nevada, New Hampshire, New Mexico, North America, Nuevo León, Oregon, Texas, United States, Utah, Washington, Wisconsin, Zacatecas
Neotropical Region: Americas, Aragua, Central America, Mexico, Sinaloa, South America, Venezuela, Veracruz
Palearctic Region: Albania, Austria, Balearic Islands, Blagoevgrad, Bulgaria, China, Croatia, Czech Republic, Eastern Asia, Eastern Europe, Europe, Georgia, Greece, Hungary, Ionía Nísia, Iran, Israel, Italy, Krapinsko-Zagorska, Macedonia, Moldova, Montana, Montenegro, North Korea, Plzeňský, Romania, Russia, Slovakia, Slovenia, Southern Europe, Switzerland, Thessalía, Turkey, Umbria, Western Asia, Western Europe

Biology:

The biology, ecology, and behavior of the North American species of Liometopum were reviewed by Hoey-Chamberlain et al. (2013)
Workers are generalist scavengers and predators, and also tend various plant-feeding insects for honeydew.

Identification:

In the context of the North American Dolichoderinae, Liometopum is readily recognized by boxy mesosoma ("thorax") with an continuously convex profile, i.e. the metanotal groove is not impressed. In addition, workers are continuously polymorphic and often have conspicuous foraging behavior.

Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Liometopum   Mayr, G., 1862, Myrmecologische Studien., Verhandlungen der Zoologisch-Botanischen Gesellschaft in Wien 12, pp. 649-776: 703, (download) 703 4445
Liometopum   Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., Zootaxa 936, pp. 1-68: 27, (download) 27 21008


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