Crotalus willardi, ridge-nosed rattlesnake

The ridge-nosed rattlesnake is a small montane rattlesnake, which has 3 subspecies in our region. Obscurus has a very small range living in the Sierra San Luis, Animas and Peloncillo Mountains. Silus lives in the southern Sky Islands and parts of the Sierra Madre. Willardi occurs in the Sky Islands of northern Sonora and southern Arizona.

Crotalus willardi willardi
Crotalus willardi silus

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