DistributionRead full entry
Range DescriptionThe entire range is on the California Channel Islands in the southwestern United States. The species occurs on San Clemente and Santa Barbara islands (subspecies reticulata) and on San Nicolas Island (subspecies riversiana). It also occurs on a small islet (Sutil Island) 1.3 km offshore from Santa Barbara Island (Bezy et al. 1980). Old records for Santa Catalina Island are erroneous. San Clemente Island, at 145 sq. km, is the largest inhabited island (San Nicolas = 57 sq. km, Santa Barbara = 16 sq. km).