Collected at UV light.
Ridges appear to be 3-3-2, which would key to near M. smithi/M. morula in Liljeblad (1)
I favor M. smithi based on the testaceous front and middle legs (M. morula is described as 'all black'). However, M. smithi should have reddish elytral markings, which I don't see here. The dorsum is covered thickly in a yellowish pubescence and it seems to be all black beneath.
Edit: After reexamining ridges as suggested by Tim Moyer, this seems to key to M. picipennis.