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Looks like T. pennipes (a reference to those fringed hind tibia pennipes means wing-footed) to me and i think it is. Right area too. But you're right it's not quite like some of the other pics we have seen. Take look at Cornell's site for a nice account.

http://www.nysaes.cornell.edu/ent/biocontrol/parasitoids/trichopoda_pennipes.html