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Long-nosed snake Colubridae: Sonora semiannulata: Western Ground snake Colubridae: Tantilla hobartsmithi: Southwestern blackhead snake Colubridae: Tantilla nigriceps * Plains blackhead snake Colubridae: Thamnophis cyrtopsis: Blackneck garter snake Colubridae: Thamnophis elegans: Western terrestrial Garter snake Colubridae: Thamnophis proximus ...
Chionactis occipitalis annulata. (Baird, 1859) Sonora annulata, also known commonly as the Colorado Desert shovelnose snake, is a species of snake in the subfamily Colubrinae of the family Colubridae. [1] The species is native to the southwestern United States and adjacent northwestern Mexico. There are two recognized subspecies.
Rubber boas are one of the smaller boa species, adults can be anywhere from 38 to 84 cm (1.25 to 2.76 ft) long; newborns are typically 19 to 23 cm (7.5 to 9.1 in) long. The common name is derived from their skin which is often loose and wrinkled and consists of small scales that are smooth and shiny. These characteristics give the snakes a ...
Crotalus oreganus. Crotalus oreganus, commonly known as the Western rattlesnake or northern Pacific rattlesnake, [4][5] is a venomous pit viper species found in western North America from the Baja California Peninsula to the southern interior of British Columbia.
The western yellow-bellied racer (Coluber constrictor mormon), [1] also known as the western yellowbelly racer[2] or western racer, [1] is a snake subspecies endemic to the Western United States, including California, Oregon, Washington, Idaho, Nevada, New Mexico, Utah, Montana and Colorado. [3][4] It is a subspecies of the eastern racer.
Sistrurus tergeminus. C [rotalus]. (Crotalophorus) miliarius var. tergeminus. Sistrurus tergeminus, also known as the western massasauga, is a rattlesnake found in the southwestern plains of the United States and northern Mexico. Like all rattlesnakes, it is a pit viper and is venomous.
This is a list of all sure genera, species and subspecies of the subfamily Crotalinae, [1] otherwise referred to as crotalines, pit vipers, or pitvipers, and including rattlesnakes Crotalus and Sistrurus. This list follows the taxonomy as of 2007 provided by ITIS, which was based on the continuing work of Dr. Roy McDiarmid.
The western ground snake can grow to a total length (including tail) of 8 to 19 inches (20.3 to 48.3 cm). The color and pattern can vary widely. Individuals can be brown, red, or orange, with black banding, orange or brown striping, or be solid-colored. The underside is typically white or gray. It has smooth dorsal scales, a small head, and the ...