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Photo#155850
Aphaenogaster worker - Aphaenogaster mariae

Aphaenogaster worker - Aphaenogaster mariae
Tippecanoe County, Indiana, USA
September 25, 2007
Size: ~ 4 mm
One of about 16 worker Aphaenogaster collected by Berlesing material from the crotch of an oak tree.

I believe this to be A. mariae based on the characters in the key here, especially the fan-shape striae on the base of the gaster. Hopefully someone can confirm/deny this ID.

Images of this individual: tag all
Aphaenogaster worker - Aphaenogaster mariae Aphaenogaster worker - Aphaenogaster mariae Aphaenogaster worker - Aphaenogaster mariae

I agree with the ID
This is a good find, not often seen. This species almost always nests in dead parts of mature oaks, foraging on the leaves, trunks, in litter accumulated in branch crotches, and occasionally on the ground near the base of the tree.

But, I once found a colony in an old white ash, the exception that "proves" the rule.

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