Pasage: Amérika Sarikat kidul-kulon mangrupakeun sumber penting tina pirus; Arizona, California (San Bernardino, Imperial, Inyo counties), Colorado (Conejos, El Paso, Lake, Saguache counties), New Mexico (Eddy, Grant, Otero, Santa Fe counties) jeung Nevada (Clark, Elko, Esmeralda County, Eureka, Lander, Mineral County and Nye counties) utamana beunghar.
Cangkang Apache