Sierra garter snake

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Sierra garter snake
Sierra garter snake handled.jpg
Thamnophis couchii being handled by a naturalist on the banks of the Middle Tuolumne River in the Sierra Nevada.
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Thamnophis
T. couchii
Binomial name
Thamnophis couchii
(Kennicott, 1859)
  • Eutaenia couchii
    Kennicott, 1859
  • Thamnophis ordinoides couchii
    Van Denburgh & Slevin, 1921
  • Thamnophis couchii
    Fitch, 1984

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.


The specific name, couchii, is in honor of Darius Nash Couch, who was a U.S. Army officer and a naturalist.[3]

Geographic range[edit]

T. couchi is native to California and Oregon in the United States.[2]


  1. ^ "Thamnophis couchii ". IUCN Red List of Threatened Species. IUCN. 2007. 2007. Retrieved 6 December 2016.
  2. ^ a b Species Thamnophis couchi at The Reptile Database
  3. ^ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5 (Thamnophis couchii, p. 60).

Further reading[edit]

  • Behler, John L.; King, F. Wayne (1979). The Audubon Society Field Guide to North American Reptiles and Amphibians. New York: Alfred A. Knopf. 743 pp., 657 color plates. ISBN 0-394-50824-6. (Thamnophis couchi, pp. 664–666).
  • Kennicott R (1859). "Eutaenia couchii ". pp. 10–11. In: Baird SF (1859). "No. 4. Report on the Reptiles Collected on the Survey". pp. 9-13 + Plates XI, XXVIII, XXX, XLIV. In: Williamson RS, Abbot HL (1859). ("1855"). Report upon Explorations for a Railroad Route from the Sacramento Valley to the Columbia River. Part IV. Zoological Report. Washington, District of Columbia: United States War Department. (Eutaenia couchii, new species).
  • Smith, Hobart M.; Brodie, Edmund D., Jr. (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. ISBN 0-307-13666-3 (paperback), ISBN 0-307-47009-1 (hardcover). (Thamnophis couchi, pp. 150–151).
  • Stebbins RC (2003). A Field Guide to Western Reptiles and Amphibians, Third Edition. The Peterson Field Guide Series ®. Boston and New York: Houghton Mifflin. xiii + 533 pp., 56 color plates, 204 maps. (Thamnophis couchii, p. 381-382, Figure 27 + Plate 49 + Map 167).