Pictorial key to the ant genera of Illinois

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

Fig. 70 Tetramorium bicarinatum (antweb.org)

Fig. 71 Protomognathus americanus (antweb.org)

22
A Dorsum of head and mesosoma rugoreticulate.

 

B Mandible with 6 or 7 teeth.

 

C Area of clypeus immediately in front of antennal sockets raised up into a narrow ridge or shield wall so that sockets appear to be placed within deep pits.

 

C' Antennal scapes not flattened at base.

 

...Tetramorium
22'
AA Dorsum of head and mesosoma not rugoreticulate.

 

BB Mandible with either 0 or 4 teeth.

 

CC Area of clypeus immediately in front of antennal sockets flat and not raised up into a narrow ridge or shield wall; antennal sockets not appearing to be set within deep pits.

 

CC' Antennal scapes flattened at base.

 

...Protomognathus