The Death Valley June beetle (Polyphylla erratica) is a scarab beetle in the subfamily Melolonthinae. It is only known to occur in the drainage basin of the Amargosa River in the southwestern United States.Saltgrass communities, such as those at Saratoga Springs in Death Valley, provide habitat for the insect at all stages of its life. Predators of the beetle include coyotes, ravens, and shrikes, the last of which are known to impale the insects on vegetation.