Osmoderma subplanata “Leather Beetle” Scarabaeidae
Missoula, MT
July 30, 2014
Robert Niese
These large (3 cm), circumboreal beetles get their name from the leathery odors they emit from their exoskeleton (Osmo- means smelly, -derma means skin). Adults spend most of their lives feeding on the decaying centers of fallen logs.
Northwest Naturalist 