Crotalus lepidus klauberi is a venomous pitviper subspecies[4] native to the southwestern United States and adjacent northern Mexico.

[5] In Mexico it is found in the Mexican states of Baja California, Chihuahua, Coahuila, Durango, Jalisco, Nuevo León, San Luis Potosí, Sonora, Tamaulipas, and Zacatecas.

[citation needed] The specific name or epithet, klauberi, is in honor of American herpetologist and rattlesnake expert Laurence M.

Those found in the Franklin Mountain range of El Paso County in Texas are unique, having a striking pearl silver background and well defined black crossbands.

It spends most of its time hiding in rock crevices, and is often found in canyons, scree slopes, or man-made road cuts.