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Species: Neivamyrmex opacithorax   (Emery, 1894) 

Download Data

Taxonomic History (provided by Barry Bolton, 2019)

Eciton californicum subsp. opacithorax Emery, 1894d PDF: 184 (diagnosis in key) (w.) U.S.A. Nearctic. AntCat AntWiki HOL

Taxonomic history

Wheeler & Long, 1901 PDF: 163, 173 (m.q., respectively); Wheeler & Wheeler, 1984a PDF: 273 (l.).
Combination in Neivamyrmex (Neivamyrmex): Smith, 1942c PDF: 555; in Neivamyrmex: Borgmeier, 1953 PDF: 5.
Raised to species: Emery, 1900e: 186.
Senior synonym of Neivamyrmex castaneum: Borgmeier, 1955 PDF: 502.


  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Costa Rica, Mexico, United States
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Nearctic, Neotropical

Distribution Notes:

collected from the Chiricahua Mtns, Cochise Co.


Habitat: Open, upland forest and woodlands, savannas, prairies, also parks and spacious campuses.

Natural History: Also relatively common and well-known, the habits of N. opacithorax are quite similar to those of N. nigrescens. Males are bicolored, black with a reddish-brown gaster, and may be seen flying on calm, cool, sunny, late summer or early fall days.



Taxonomic Treatment (provided by Plazi)

Scientific Name Status Publication Pages ModsID GoogleMaps
Neivamyrmex opacithorax   Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., Zootaxa 936, pp. 1-68: -1, (download) -1 21008
Neivamyrmex opacithorax   Snelling, G. C. & Snelling, R. R., 2007, New synonymy, new species, new keys to Neivamyrmex army ants of the United States., Advances in ant systematics (Hymenoptera: Formicidae): Homage to E. O. Wilson - 50 years of contributions. (Memoirs of the American Entomological Institute 80), pp. 459-550: 486-487, (download) 486-487 21290

Specimen Habitat Summary

Found most commonly in these habitats: 1 times found in road edge in mesophyl forest, 2 times found in oak pine juniper woodland, 2 times found in 2º wet forest, 1 times found in grazed creosote desert, 2 times found in swamp forest, 1 times found in pine-oak forest, 1 times found in Ponderosa Pine for. 50' tall. Dry creekbed w / shrubby lonicera + Robinia unders, 1 times found in Flatwoods, 1 times found in Quercus-Pinus-Psudotsuga forest, 1 times found in in mature sand pine forest, ...

Found most commonly in these microhabitats: 1 times column on road, 2 times at bait, 3 times under stone, 1 times raiding column, 1 times in dead wood below ground, 2 times under rock, adjacent to old stump, 2 times sample from tree base, 1 times raiding columns, 1 times night collecting; foraging column, 1 times in ant colony refuse under stone, 1 times ground foragers, ...

Collected most commonly using these methods: 5 times search, 3 times direct collection, 2 times Baiting, 1 times Search, subterranean raid, 2 times Berlese, 1 times general collecting, 1 times Malaise trap.

Elevations: collected from 6 - 1960 meters, 1270 meters average

Type specimens: syntype of Eciton californicum opacithorax: casent0903735

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