Pictorial key to the ant genera of Illinois

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

Fig. 97 Pheidole bicarinata (antweb.org)

Fig. 98 Aphaenogaster lamellidens (antweb.org)

30
A Antenna with a distinct 3- or rarely 4 segmented apical club.

 

B Palp count 3,2 or 2,2. Worker caste dimorphic, rarely strongly polymorphic.

 

...Pheidole
30'
AA Antenna without distinct apical club.

 

BB PPalp count 5,3 or 4,3. Workers monomorphic or weakly to moderately polymorphic.

 

...Aphaenogaster