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Photo#700300
Wasp ? - Calopompilus pyrrhomelas

Wasp ? - Calopompilus pyrrhomelas
Mt. Eddy, Siskiyou County, California, USA
September 2, 2012
Size: .75"

Moved
Moved from Spider Wasps. I missed the barely visible, but noticeable straight TCV2 the first time I looked at this photo. That wing venation character is typical of Calopompilus.

Moved
Moved from ID Request.

Pepsine...
perhaps Calopompilus pyrrhomelas.

Yes, a wasp
I think probably Pompilidae. If I were guessing I would guess it's one of the genera called "tarantula hawks," but you should definitely wait for confirmation (I'm not sure the orange wings are diagnostic).

 
You...
are correct about the wings; there are at least five genera that also have species with entirely orange wings other than Pepsis: Calopompilus, Hemipepsis, Entypus, Cryptocheilus, and Sphictostethus.