Pictorial key to the ant genera of Illinois

by N.C. Wilkins and S.B. Menke

Fig. 11 Brachymyrmex depilis (antweb.org)

Fig. 12 Formica biophilica (antweb.org)

4
A Antenna 9 segmented, eyes well developed.

 

...Brachymyrmex
4'
AA Antenna 12 segmented, eyes well developed.
5