Sphecid wasp on Eryngium from Wakulla County Florida - Tachytes
Wakulla County, Florida, USA August 13, 2011 Size: 486 x 436
Pretty sure it's a sphecid wasp. I think it may be family Crabrionidae, subfamily Bembecinae and just maybe, genus Bicyrtes. I'm no entomologist so I would appreciate comments from more expert people.