Pictorial key to the ant genera of Illinois

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

Fig. 54 Ponera pennsylvanica (antweb.org)

Fig. 55 Hypoponera opacior (antweb.org)

16
A Petiole, in side view, with lobe-like subpetiolar process that has a circular, often translucent thin spot (window) toward the front and 2 small, sharp teeth or angles projecting posteriorly.

 

...Ponera
16'
AA Subpetiolar process a simple rounded lobe, without a translucent thin spot toward the front when viewed from the side and without sharp teeth or angles to the rear.

 

...Hypoponera