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Photo#581902
Acanthochalcis nigricans - Acanthochalcis

Acanthochalcis nigricans - Acanthochalcis
Montosa Cny, Santa Cruz County, Arizona, USA
September 20, 2011
Size: 28mm

Moved
Moved from ID Request.

-
Per a chalcidologist friend,this is definitely Acanthochalcis, but he believes the species is probably unispinosa.

 
Its a beautiful shot...
but I wish it were turned just a little more to the side. A. nigricans has the white tufts of setae on the sides of the abdomen, while A. unispinosa does not. I have collected both, but nigricans is more common in AZ.

 
I collected one this year
that is huge and has the tufts.

Yes...
You're in a good place, because these have only been found in arid areas of the southwest.

See reference here.

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