Juvenile, 2,300′, Pima County, Arizona
Close-Up of Head
SONORAN SIDEWINDER
Crotalus cerastes – Hallowell 1854
Crotalus cerastes cercobombus – Savage & Cliff 1953
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REFERENCES:
Campbell, J. A. and W. W. Lamar. 2004. The Venomous Reptiles of the Western Hemisphere. Cornell Univ. Press, Ithaca, New York, 870 pp.