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Species: Neivamyrmex texanus   Watkins, 1972 

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Taxonomic History (provided by Barry Bolton, 2019)

Neivamyrmex texanus Watkins, 1972 PDF: 353, figs. 2-4, 11, 14, 17-19, 33, 34, 49, 61 (w.q.m.) U.S.A. Nearctic. AntCat AntWiki HOL

Taxonomic history


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

Distribution Notes:

collected from the Chiricahua Mtns, Cochise Co.

Taxonomic Treatment (provided by Plazi)

Treatment Citation: 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

Neivamyrmex texanus WatkinsHNS

Figures 47, 112, 123, 137, 148

Neivamyrmex texanus WatkinsHNS, 1972: 353 (w, q, m). U. S. A., Texas, Travis Co., Austin (USNM).


UNITED STATES: Virginia to Florida, west to Colorado and Arizona; MEXICO: San Luis Potosi to Hidalgo and Jalisco.


In addition to numerous paratypes, we have 34 records from various states.


Small workers may be difficult to distinguish from those of N. nigrescensHNS, but larger workers are fairly easy to distinguish with a little practice. Males may be readily recognized by the distinctive shape of the paramere.

This is a widespread ant, found in many different types of habitat. Although not commonly seen, N. texanusHNS is a large (for NeivamyrmexHNS) and conspicuous ant when it is actively foraging. Immigration columns are prominent and may often be seen from some distance away when crossing a suitable background. One observed near Tucson stretched well over 100 yards across the desert and could be readily seen as it meandered across the light colored sand. The blind snake, Leptotyphlops dulcius, was observed in the column. Occasionally, when an ant displayed an interest in the snake, it was quickly flicked off (pers. obs., GCS).

Plsek et al. (1969) observed Helluomorphoides texanus (LeConte) in raiding columns of N. texanusHNS and reported their observations on behavior of this species in the laboratory.

Automontage images of the worker are available at antweb. org.

Specimen Habitat Summary

Found most commonly in these habitats: 13 times found in agricultural zone, 1 times found in mesquite scrub, 1 times found in road in coffee farm, 2 times found in Sand Pine Scrub, 1 times found in disturbed oak scrub, 1 times found in highland/grassland/oak woodland, 1 times found in open grassy desert, 1 times found in Chihuahuan desert.

Found most commonly in these microhabitats: 1 times at bait, 1 times diurnal column, 1 times under scrap plywood, 1 times raiding columns, 1 times ground foragers.

Collected most commonly using these methods: 15 times pitfall, 1 times search, 1 times Baiting, 1 times mercury vapor lamp, 30pm, cloudy day times 4.

Elevations: collected from 1020 - 2050 meters, 1774 meters average

Type specimens:

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