Child Taxa
Taxon Name
Crotalus willardi amabilis Del Nido Ridge-nosed Rattlesnake
Crotalus willardi meridionalis Southern Ridge-nosed Rattlesnake
Crotalus willardi obscurus New Mexico Ridge-nosed Rattlesnake
Crotalus willardi silus Chihuahua Ridge-nosed Rattlesnake
Crotalus willardi willardi Arizona Ridge-nosed Rattlesnake