Lacinipolia sp..
Size: approx. 20 mm. Photo: 04/22/12, 9 pm.

The genus Lacinipolia has over fifty species in North America. Two possible assignments for this specimen are L. laudabilis (Laudable Arches Moth - Hodges#10411) and L. implicata (Implicit Arches Moth - Hodges#10414). The small photo was taken on 04/04/17. 

bug guide (this photo):
bug guide (small photo):