Crotalus lepidus klauberi is a venomous pitviper subspecies found in the southern United States, in Arizona, New Mexico and Texas, and northern Mexico, including the states of Baja California, Sonora, Chihuahua, Coahuila, Nuevo Leon, Tamaulipas, Durango, Zacatecas, San luis Potosi and Jalisco. The epithet klauberi is in honor of the herpetologist, and rattlesnake expert Laurence M. Klauber.