Phosphuga

Phosphuga is a Eurasian genus of flightless carrion beetle, whose sole member is the species Phosphuga atrata, commonly known as black snail beetle. Up to 15mm long, they have an oval shape as adults and are brownish in color when newly moulted, becoming black as their exoskeleton hardens. Black snail beetles resemble the type genus Silpha of the carrion beetle subfamily Silphinae, and are thus placed in tribe Silphini. Although they range widely, they are seldom encountered by people, because they hunt at night and hide during the day, often under bark.