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Southern USA to Argentina. Costa Rica: Northern Pacific lowlands, Atlantic lowlands, southern highlands.
I collected workers of this species under a rock on the ridge between Playa Naranjo and Playa Nancite in Santa Rosa National Park, an area of scrubby vegetation and grasses in a relatively xeric habitat. Ivette Perfecto collected workers in a coffee farm near Heredia. Curiously, males are known from La Selva Biological Station in the Atlantic lowlands and Wilson Botanical Garden in the southern mountains. During an 18-month program of sampling using blacklight traps at La Selva, as part of the ALAS project, males occurred in three different samples, in the months of March and May.
The workers of this species have traditionally been identified as fallax Borgmeier 1953.
|Neivamyrmex swainsonii||Ward, P. S., 2005, A synoptic review of the ants of California (Hymenoptera: Formicidae)., Zootaxa 936, pp. 1-68: -1, (download)||-1||21008|
|Neivamyrmex swainsonii||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: 489-490, (download)||489-490||21290|
|Neivamyrmex swainsonii||Wild, A. L., 2007, A catalogue of the ants of Paraguay (Hymenoptera: Formicidae)., Zootaxa 1622, pp. 1-55: 26, (download)||26||21367|
Found most commonly in these habitats: 1 times found in 2° wet forest, 1 times found in coffee farms vic. Heredia, 5 times found in mature rainforest, 5 times found in SOR 750m., 4 times found in agricultural zone, 2 times found in oak-juniper woodland, 2 times found in desert, 2 times found in oak-pine-juniper woodland, 0 times found in collected in vacant area adjacent to parking lot, 1 times found in Podocarpus forest, ...
Found most commonly in these microhabitats: 2 times ex sifted leaf litter, 5 times under stone, 5 times light trap, 1 times under rock in leaf litter under oak, 1 times in raided Solenopsis xyloni nest., 1 times ex sifting forest litter, 1 times column on ground, 1 times at lights., 1 times raid attacking Pheidole, 1 times dusk column, 1 times at lights, ...
Collected most commonly using these methods: 13 times Lighttrap, 9 times light trap, 1 times MaxiWinkler, 3 times search, 4 times pitfall, 1 times hand collecting, 1 times Booty dump, 1 times miniWinkler, 1 times at light, in classroom, 1 times Search, subterranean raid, 1 times blacklight, ...
Elevations: collected from 6 - 3150 meters, 854 meters average
Collect Date Range: collected between 1895-06-25 00:00:00.0 and 2019-10-28 00:00:00.0