Nessaea aglaura
(I.D. Courtesy of Danny Burk)

This seemed to be different from any of the others I saw on either trip. The appearance and texture of the wings seem to suggest that it had only recently emerged, but this is just a guess. Danny Burk to the rescue again - he's confident of the Genus, with an educated guess on the species. Canon 100-400 at 400 mm, 20 mm extension, ISO 400, f/16, 1/200 second (manual mode), 550EX Flash EV +2/3, monopod with Arca-Swiss ballhead and Wimberley Sidekick.