Crotalus cerberus
In a last ditch effort to find another species on our epic herp trip of '08, we hit up a spot for cerbs and were rewarded at 1:00 A.M. with a pitch black male. This male lightened up dramatically overnight. Pima County, AZ. August 2008.

On our way up the Pinalenos to look for pricei, we saw this beautiful cerb. Graham County, AZ. July 2009.
Adult male. Pima County, AZ. August 2015.
A juvenile showing the bold patterning that will fade as the animal ages. Pima County, AZ. August 2015.