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|Combination in Eciton: Dalla Torre, 1893 PDF}: 5; in Neivamyrmex (Labidus): Emery, 1895d PDF: 261; in Neivamyrmex (Acamatus): Emery, 1900e: 187; in Neivamyrmex (Neivamyrmex): Smith, 1942c PDF: 550; Gregg, 1963: 286; in Neivamyrmex: Borgmeier, 1955 PDF: 494; Watkins, 1972 PDF}: 349.|
|Neivamyrmex nigrescens||Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., Zootaxa 936, pp. 1-68: -1, (download)||-1||21008|
|Neivamyrmex nigrescens||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: 484-485, (download)||484-485||21290|
Found most commonly in these habitats: 2 times found in oak-pine-juniper woodland, 1 times found in Live-oak shaded rock outcrop, 2 times found in chaparral, 3 times found in oak woodland, 2 times found in chaparral on serpentine, 1 times found in oak-pine-juniper woodland surrounding, 1 times found in Chihuahuan desert, 1 times found in pine-oak forest, 1 times found in oak pine juniper woodland, 1 times found in shrub steppe, ...
Found most commonly in these microhabitats: 5 times under stone, 2 times ground forager(s), 1 times ex rotting tree stump, 2 times ground foragers, 2 times feeding on termites, 1 times raiding Formica moki at night, 2 times Messor nest midden, 00 pm, raiding Pheidole californica nest (PSW16680) times ground foragers, 4, 1 times ex midden of Messor andrei nest;, 1 times emigration column, 1 times serpentine chaparral, in ant colony refuse under stone, ...
Collected most commonly using these methods: 3 times search, 1 times army ant raid, 1 times Search, subterranean raid.
Elevations: collected from 6 - 1960 meters, 1106 meters average