Aulacidae - Pristaulacus occidentalis

Moved

Moved from Aulacidae.

… v belov, 19 July, 2009 - 10:00pm

Pristaulacus occidentalis (Cr

Pristaulacus occidentalis (Cresson)

… Dave Smith, 12 July, 2009 - 7:47pm

Moved

Moved from Thread-waisted Wasps.

… Libby & Rick Avis, 8 February, 2008 - 9:08pm

I'd suggest a male Gasterupti

I'd suggest a male Gasteruptiidae. Definitely not a sphecid.

… Dennis Haines, 2 February, 2008 - 4:50pm

Thank-you

Thanks for setting me on the right track! It doesn't have an expanded hind tibia, though. Blew up a couple of the photos & looking at the wing veination, I'm wondering if it's more likely to be an Aulacidae species?

… Libby & Rick Avis, 8 February, 2008 - 6:08pm

I think you're right

For the same reasons you quote.
Legs and forewing venation (e.g., bigger 1rst "discoidal" cell) match better with Aulacidae (a group closely related to Gasteruptiidae, whith the same "neck"-shaped prothorax). A male individual anyway, since Aulacid females too have a protruding, albeit short, ovipositor.
Thanks for sharing these excellent pictures.

… Richard Vernier, 9 February, 2008 - 12:38am

Thank-you

Thanks for confirming, Richard.

… Libby & Rick Avis, 9 February, 2008 - 6:05pm

I think you're right.

The venation does look a bit more complex than that of Gasteruptiidae. The spot in the wing is often a character in Aulacidae.

… Dennis Haines, 8 February, 2008 - 6:15pm

....I guess I'll move it to Aulacidae for now. Really appreciate your help!

… Libby & Rick Avis, 8 February, 2008 - 9:03pm

Yes!

Male, probably in genus Pristaulacus. Great find!

… Eric R. Eaton, 11 February, 2008 - 6:28pm