Pictorial key to the ant genera of Illinois

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

Fig. 26 Lasius neoniger (antweb.org)

Fig. 27 Lasius latipes (antweb.org)

Fig. 28 Prenolepis imparis (antweb.org)

Fig. 29 Prenolepis imparis (antweb.org)

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A Antennal scape surpassing posterior lateral margin of head (if at all) by ≤ 1/3 of its length.

 

B Pronotum without black coarse hairs but with pilosity that is long or short and often golden in color.

 

C Mandibles with 7-8 teeth or denticles.

 

...Lasius
8'
AA Antennal scape usually surpassing posterior lateral margin of head by ≥ 1/3 of its length.

 

BB Erect hairs on dorsum of pronotum either coarse, long and black or brown, or fine and golden in color.

 

CC Mandibles with 5-6 teeth.

 

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