Death Valley June beetle Concern by the United States Fish and Wildlife Service. The California Department of Fish and Game considers the beetle a "Special Animal" of high conservation need. Death Valley June beetle 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
Death Valley prevent much cloud formation from passing through the confines of the valley, where precipitation is often in the form of a virga. Death Valley holds temperature records because it has an unusually high number of factors that lead to high atmospheric temperatures. The depth and shape of Death Valley influence its summer temperatures. The valley is a long, narrow basin below sea level, yet is walled by high, steep mountain ranges. The clear, dry air and sparse plant cover allow sunlight to heat the desert surface. Summer nights provide little relief, as overnight lows may only dip into the range.