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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, 1 times found in pine-oak forest, 3 times found in oak woodland, 2 times found in chaparral, 1 times found in oak-pine-juniper woodland surrounding, 1 times found in oak pine juniper woodland, 1 times found in pine/Yucca woodland, 1 times found in shrub steppe, 2 times found in chaparral on serpentine, ...
Found most commonly in these microhabitats: 5 times under stone, 2 times ground forager(s), 1 times ex rotting tree stump, 1 times raiding Formica moki at night, 2 times Messor nest midden, 2 times ground foragers, 2 times feeding on termites, 1 times dusk column, 1 times serpentine chaparral, in ant colony refuse under stone, 30 pm times nocturnal ground foragers ~10, 1 times night collecting; raiding column, ...
Collected most commonly using these methods: 4 times search, 1 times army ant raid, 2 times under stone, 1 times Search, subterranean raid, 0 times under rock, 0 times army on trail, 0 times foraging column, 0 times foraging in road, 10pm, 0 times on trail, 4pm, 0 times under dung, gravelly hilltop, 0 times under rock on hillside, ...
Elevations: collected from 6 - 2438 meters, 1256 meters average