Black diamond rattlesnake

• Crotalus o. oreganus, also known as the Pacific rattlesnake, a venomous pitviper subspecies found from British Columbia, Canada, south through the United States into California.
• Crotalus cerberus, also known as the Arizona black rattlesnake, a venomous pitviper species found in the southwestern United States.
• Crotalus helleri, also known as the Southern Pacific rattlesnake, a venomous pitviper species found in South-West California and south into Baja California.