DistributionRead full entry
Range DescriptionThe range of this species extends from south-central British Columbia in Canada, through the western United States to northwestern Baja California in Mexico. In the United States it ranges from the Pacific coast to western Montana, Idaho, eastern Utah, and north-central Arizona, including various islands off the west coast of California and Baja California (Grismer 2002, Stebbins 2003). In Mexico, its range extends possibly as far south as el Rosario. Its elevational range is from sea level (California) to about 2,530 m (8,300 feet) (southern Utah, southern Nevada, northern Arizona) (Tanner 1988, Stebbins 2003).