Key to Nomamyrmex males

This key to males is based on: [[Media:Watkins 1977a.pdf|Watkins, J. F., II. 1977a. The species and subspecies of Nomamyrmex (Dorylinae: Formicidae). Journal of the Kansas Entomological Society. 50:203-214. PDF]]

You may also be interested in

Nomamyrmex

1

 * Border of head behind ocellar peduncle without lamella; first gastric tergite without longitudinal rugae; width of blade of stipes at least two-thirds its length; posteroventral projection of volsella triangular with a small dorsal tooth near the sharp apex . . . . . Nomamyrmex hartigii


 * Median border of head behind ocellar peduncle with a narrow lamella; first gastric tergite usually with longitudinal rugae; width of blade of stipes about one-half its length; volsellae blunt, gradually tapered or snout-shaped (esenbecki) . . . . . 2

2
return to couplet #1
 * Setae on fifth gastric tergite not distinctly separated along midline (i.e., erect setae are at least present in the middle of the posterior portion of the tergite, even though these setae may be somewhat shorter than the lateral setae; longitudinal rugae distinct on second gastric tergite . . . . . Nomamyrmex esenbeckii


 * Setae on fifth gastric tergite distinctly separated along the midline; longitudinal rugae indistinct or absent on second gastric tergite except in sulcus at anterior edge . . . . . 3

3
return to couplet #2
 * Distal one-half of volsella (lateral view) straight with a blunt apex . . . . . Nomamyrmex esenbeckii wilsoni


 * Distal portion of volsella (lateral view) snout-shaped or tapered and slightly bent downward . . . . . 4

4
return to couplet #3
 * Setae on fifth gastric tergite broadly separated along midline (i.e., separation about one-half width of tergite near its base); distal portion of volsella distinctly snout-shaped . . . . . Nomamyrmex esenbeckii


 * Setae on fifth gastric tergite narrowly separated along midline (i.e., separation about one-fourth width of tergite near its base); distal one-fourth of volsella slightly tapered and slightly bent downward . . . . . Nomamyrmex esenbeckii mordax