While trying to escape the cold, we went camping in southern AZ and this flew to the UV light. It seems to key easily to Agna using Am. Beetles. The vague but large antennal grooves and the tectiform and carinate prosternum with side ridges seems to be unambiguous. I haven't any detailed description, so an expert opinion would be very helpful. There is apparently only this single species in the genus which might have a distribution in the southwest?