It is known in the United States from widely scattered localities from Santa Clara County near sea level in mid-coastal California north to southern Alaska and west to the Rocky Mountains of Colorado to elevations of 2,800 meters.
Nó được tìm thấy ở widely scattered localities from Santa Clara County near sea level in mid-coastal California phía bắc đến miền nam Alaska và phía tây đến the Rocky Mountains of Colorado to elevations of 2,800 meters.