Elasmopalpus lignosellus - Hodges#5896
(Lesser Cornstalk Borer) ♂.
Size: approx. 10-20 mm. Photo: 11/13/11, 8 pm.

Elasmopalpus lignosellus is an agricultural pest and often found in the southeastern United States. Its complete life cycle usually requires 30 to 60 days. At rest, the female moth is typically charcoal-colored, while the male moth is tan-colored with charcoal wing strips. The thorax is light in males, but dark in females. The hind wings of both sexes are transparent with a silvery tint. 
bug guide (this photo):