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Photo#1032421
Trypoxylon with red abdominal band on rock - Trypoxylon

Trypoxylon with red abdominal band on rock - Trypoxylon
6 miles NW Lyons, Boulder County, Colorado, USA
August 15, 2011
This trypoxylon wasp has a red abdominal band. In years past we have seen this wasp emerge from a bee trap. Is it possible to get it to species? Any help is much appreciated.

Moved
Moved from Trypoxylon.

 
Trypoxylon subgenus Trypargilum
Thanks so much for this ID. When I check out Krombein et al, I see that this subgenus, which was previously a genus, and a few species in genus Pison are the only wasps in which males are known to assist in some of the nesting activities. How intriguing!

Moved for expert attention
Moved from ID Request.

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