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Figures 47, 112, 123, 137, 148
DISTRIBUTION (Map 12)
UNITED STATES: Virginia to Florida, west to Colorado and Arizona; MEXICO: San Luis Potosi to Hidalgo and Jalisco.
SPECIMENS EXAMINED (U. S. A.)
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).
Automontage images of the worker are available at antweb. org.
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