Hemipsocus chloroticus.
Size: approx. 4 mm. Photo: 08/11/14, 9 pm.

This cool little beast belongs to the family Hemipsocidae (Leaf Litter Barklice) which (in the US) has only this one genus and two species. Its range in North America seems to be limited to the Southeast and Texas. I was told that this specimen is likely a female. 
bug guide (this photo):