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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 ...
The United States in the Great Basin region. Its range includes Idaho south of lat. 44° North, Utah west of long. 111° West, Arizona west and north of the Colorado River as well as the north rim of the Grand Canyon, the entire state of Nevada (excluding Esmeralda, Nye and Clark counties), California east of the Sierra Nevada from Lower Klamath Lake south to below Lake Mono, Oregon south and ...
The western diamondback rattlesnake[ 3 ] or Texas diamond-back[ 4 ] (Crotalus atrox) is a rattlesnake species and member of the viper family, found in the southwestern United States and Mexico. Like all other rattlesnakes and all other vipers, it is venomous. It is likely responsible for the majority of snakebite fatalities in northern Mexico ...
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.
Crotalus cerastes, known as the sidewinder, horned rattlesnake or sidewinder rattlesnake, [3] is a pit viper species belonging to the genus Crotalus (the rattlesnakes), and is found in the desert regions of the Southwestern United States and northwestern Mexico. Like all other pit vipers, it is venomous. Three subspecies are currently recognized.
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.
Eastern racer. The eastern racer, or North American racer (Coluber constrictor), is a species of nonvenomous snake in the family Colubridae. The species is endemic to North America and Central America. Eleven subspecies, including the nominotypical subspecies, are recognized, which as a group are commonly referred to as the eastern racers.
The western hognose snake is a relatively small, stout-bodied snake. Its color and pattern is highly variable between subspecies, although most specimens appear much like rattlesnakes to the untrained eye, which appears to be Batesian mimicry. Males are considerably smaller than females, with adults rarely exceeding a total length (including ...