Ledaea perditalis - Hodges#8491 (Lost Owlet).
Size: approx. 20 mm. Photo: 08/10/14, 10 pm.

The Lost Owlet is common in the South. It lives near the edges of wet woods and marshes. Its larvae feed on woolgrass and buttonbush. The grayish forewing has a curved, double line forming a solid black bar the inner margin. This moth was attracted to our outdoor lights.  
bug guide (this photo):