Pictorial key to the ant genera of Illinois

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

Fig. 35 Dolichoderus plagiatus (antweb.org)

Fig. 36 Dorymyrmex bureni (antweb.org)

Fig. 37 Linepithema humile (antweb.org)

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A Propodeum (lateral view) strongly hollowed out behind, forming a shelf that overhangs the petiole, the node of which fits snugly into this concavity. Propodeum rounded at juncture of dorsal and declivitous face, often strongly sculptured with large shallow punctures.

 

...Dolichoderus
10'
AA Propodeum (lateral view) is not concave. Propodeum never strongly sculptured.
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