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Oregon garter snake (T. a. hydrophilus), in OregonThe aquatic garter snake grows up to 18–40 inches (46–102 cm) long. Its dorsal coloration varies greatly. The different coloration patterns are: pale gray with alternating rows of darker blotches on the sides, dark brown with borders that are less distinct, or nearly all black.
Thamnophis elegans: Terrestrial garter snake Thamnophis gigas: Giant garter snake Thamnophis hammondii: Two-striped garter snake Thamnophis marcianus: Checkered garter snake Thamnophis ordinoides: Northwestern garter snake Thamnophis sirtalis: Common garter snake Trimorphodon lambda: Sonoran lyre snake Trimorphodon lyrophanes: California lyresnake
The California red-sided garter snake (Thamnophis sirtalis infernalis) is a subspecies of the common garter snake. This slender subspecies of natricine snake is indigenous to North America and is one of three recognized subspecies of Thamnophis sirtalis found in California .
The diet of Thamnophis elegans depends heavily on the prey available in the local area, and thus varies due to regional geographical differences. This makes the western terrestrial garter snake an excellent example of polyphagism—the adaptation of an organism to maintain a varied diet. [ 11 ]
The giant garter snake is found in Central California. Its historic range extends through much of Central California's Sacramento and San Joaquin valleys but has been reduced to a few fragmented areas in the Sacramento Valley. [5] Due to its semiaquatic nature, it is rarely found more than a few meters from water [6] during the active season.
Conant R (1961). "A New Water Snake from Mexico, with Notes on Anal Plates and Apical Pits in Natrix and Thamnophis". American Museum Novitates (2060): 1–22. (Natrix valida thamnophisoides, new subspecies, pp. 2–12, Figure 1). Cope ED (1861). "Notes and descriptions of new and little known species of American Reptiles".
Thamnophis couchii, commonly known as Couch's garter snake, the Sierra garter snake, or the western aquatic garter snake, is a species of snake in the family Colubridae. The species is endemic to the western United States .
Garter snake is the common name for small to medium-sized snakes belonging to the genus Thamnophis in the family Colubridae. They are native to North and Central America , ranging from central Canada in the north to Costa Rica in the south.