Moved from Round Fungus Beetles.

I would say it is unambiguously an Anogdus male. The Peck & Cook key requires male genitalia, but ignoring the key, detailed species descriptions suggests you could get a name comparing the visible morphology. I have a very similar male from Hillsboro Pk. in Sierra Co. NM. Every detail I can see from your nice photos agrees. Unfortunately I have this specimen labeled as unknown, because it fits none of the species really well. The pattern of metasternal punctures, the distinct large puncts at the anterior margin and shallow puncts medially and laterally don't agree well with superans or puritans which otherwise come close. I'm not all that good at this family. I suspect you'll need an expert for the species name.

Moved from Beetles.