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Thamnophis proximus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Genus: Thamnophis
Species:
T. proximus
Binomial name
Thamnophis proximus
(Say, 1823)
Synonyms[2]
  • Coluber proximus
    Say, 1823
  • Eutaenia proxima
    — Baird & Girard, 1853
  • Thamnophis proxima
    — Garman, 1892
  • Thamnophis saurita proxima
    — Barbour & Cole, 1906
  • Thamnophis sauritus proximus
    — Burt, 1935
  • Thamnophis proximus
    — Rossman, 1963

Thamnophis proximus, commonly known as the western ribbon snake, is a species of garter snake in the subfamily Natricinae of the family Colubridae. The species is endemic to the western United States, Mexico, and Central America. The species has six recognized subspecies.

Description

T. proximus is a slender snake with a very long tail, approximately one-third of the total length of the body. Dorsally, T. proximus is blackish, brown, or olive with three light-colored stripes. Ventrally, it is greenish-white or yellowish-white. The upper labials are whitish and unmarked, contrasting with the dark top and sides of the head.[3]

Adults measure 17–50 in (43–127 cm) in total length (including the tail).[4]

Subspecies

Six subspecies of the western ribbon snake (T. proximus) are recognized as being valid, including the nominate subspecies.[2]

Nota bene: A trinomial authority in parentheses indicates that the subspecies was originally described in a genus other than Thamnophis.

References

  1. ^ Chaves, G.; Lamar, W.; Porras, L.W.; Solórzano, A.; Sunyer, J.; Hammerson, G.A. (2013). "Thamnophis proximus". IUCN Red List of Threatened Species. 2013: e.T198522A2529292. doi:10.2305/IUCN.UK.2013-2.RLTS.T198522A2529292.en. Retrieved 19 November 2021.
  2. ^ a b Species Thamnophis proximus at The Reptile Database . www.reptile-database.org.
  3. ^ Schmidt KP, Davis DD (1941). Field Book of Snakes of the United States and Canada. New York: G.P. Putnam's Sons. 365 pp., 34 Plates. (Thamnophis sauritus proximus, pp. 256-257 + Plate 28).
  4. ^ Wright AH, Wright AA (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock Publishing Associates, a Division of Cornell University Press. 1,105 pp. (in two volumes). (Thamnophis sauritus proximus, pp. 827-832, Figures 239, 240 + Map 59 on p. 767).

Further reading

External links


Taxon identifiers
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