Key to North American Genera of Dorylinae

This key to the genera of North American Dorylinae has been adapted from Fisher & Cover (2007).

1

 * Tarsal claws simple, lacking a median tooth (A) => Neivamyrmex
 * Tarsal claws with a median tooth in addition to the terminal point (AA) => 2

2

 * Apical width of antennal scape more than one third of its total length (A). Propodeum in profile equipped with a pair of teeth or spines (B). Workers weakly to moderately polymorphic. Majors lacking enormous heads. Entire body heavily sculptured and opaque. (Central and southern Texas.) => Nomamyrmex
 * Apical width of antennal scape less than one third of its total length (AA). Propodeum in profile without teeth or spines (BB). Workers strongly polymorphic. Majors with enormous heads. The head (at least) relatively unsculptured and moderately to strongly shining. (Central and eastern Texas and adjacent states) => Labidus