Cottonwood Heights, Utah, USA, Salt Lake County, Utah, USA May 16, 2010
As far as I can tell this is an Megachilidae, but I don't have a key that goes beyond this. I will add several photos: full body, anterior dorsal head, anterior ventral head, front wing, hind wing, and base of wings showing parasitic mites. This is the full body (about 1 cm long)