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Common Pompilid in the dunes - Anoplius semicinctus - female

Common Pompilid in the dunes - Anoplius semicinctus - Female
Blue Sky Rd, Willcox, Cochise County, Arizona, USA
July 15, 2017

Moved from Blue-Black Spider Wasps. I was in Arizona two weeks ago and collected one from the same location.

Moved from ID Request.

Moved from ID Request.

Female - Blue-Black Spider Wasp
6 abdominal segments and 10 flagellomeres = ♀
There are at least three species that have females that look somewhat like this and there may be more: Anoplius atrox - Anoplius carolinus - Anoplius semicinctus - However, I'm not sure if any of those are available in Arizona.
You might want to wait at the genus level, for now. Nick or Eric might have more info about the ranges. Did you collect the specimen? Better shots of the wing-veins might be needed, but I'm not sure.

am reasonably confident this is A. semicinctus. The posterior declivity of the propodeum, the more "subdued" hairiness of the mesosoma, and the entirely dark wings suggest this species. A. atrox would have an emarginate clypeus, obviously not visible in this photo...but that would be confirmatory. A. carolina can be eliminated by range as it is restricted to the eastern half of the US. Additionally, A semicinctus is a species characteristic of dunes or other open sandy areas.

We have about 23 spp of Anoplius in Arizona
but of the ones you mention I only found Anoplius atrox mentioned as a possibility in the list of the UAIC data base

A. semicinctus in UAIC database
A. marginalis is a junior synonym of A. semicinctus. In most cases I have seen that if a spider wasp expert has not been to a collection some of the new names have not been applied to database. There is a single record in the UAIC under A. marginalis and two separate records in Evans' revision under the same name.

Yes, I have the specimen
I'm also going to the UAIC collection next week, I can check there

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