Range Description

This species is endemic to the west of the United States. Its range includes the Sierra Nevada, California, north to the Pit River, south to the Tehachapi Mountains, and extends east along major rivers to the Owens Valley and west-central Nevada, at elevations of about 90 to 2,440 m (300 to 8,000 feet) (Rossman et al. 1996, Ernst and Ernst 2003, Stebbins 2003).