Pictorial key to the ant genera of Illinois

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


Fig. 7 Lasius interjectus (alexanderwild.com)


Fig. 8 Camponotus nearcticus (antweb.org)

Fig. 9 Azteca sp. (alexanderwild.com)

Fig. 10 Tapinoma sessile (antweb.org)

3
A Apex of abdomen with circular opening (acidopore), usually surrounded by fringe of hairs.

 

B If the fringe of hairs is not present, then the antennal insertions are set well back from the posterior border of the clypeus.

 

4
3'
AA Acidopore absent. Apex of abdomen with a transverse slit like orifice, not surrounded by a fringe of hairs.

 

BB Antennal insertions set at or directly adjacent to the posterior border of the clypeus.

 

10