Arizona Black-Tailed Rattlesnake. Mescal Trail, Sedona, AZ
45 degrees and raining.
Found on brumation on 1/9/15.
Found on Rocky Road trail.
Crotalus is a genus of venomous pit vipers found only in the Americas from southern Canada to northern Argentina. The name is derived from the Greek word krotalon, which means "rattle" or "castanet", and refers to the rattle on the end of the tail which makes this group (genera Crotalus and Sistrurus) so distinctive. 32 species are currently recognized.