Perhaps aerata. It emerged from a pupa collected on 8/16/12 on mountain mint.
That day I found a caterpillar camouflaged with bits of mt. mint petals and flowers. Then, I realized that a similar little pile of debris must be a pupa of the same species. I took it home and, on 8/22/12 the adult emerged.
Pupa from a caterpillar found the same day:

Caterpillar collected at same locale on 8/25/12

Update, 9/1/12: it laid eggs, so it is a female.


Higher resolution image