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The sharp-tailed snake or sharptail snake (''Contia tenuis'') is a small species of snake in the family
Colubridae Colubridae (, commonly known as colubrids , from la, coluber, 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on ever ...
. The species is endemic to the Western United States and British Columbia.


Common names

Additional
common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often contrast ...
s for ''C. tenuis'' include brown snake, gentle brown snake, Oregon worm snake, Pacific brown snake, Pacific ground snake, and purple-tailed snake.


Geographic range

''C. tenuis'' is distributed through the states of California, Oregon, and Washington, as well as British Columbia, Canada: Southern Vancouver Island, British Columbia around Victoria, British Columbia, and a newly discovered site in
Pemberton, British Columbia Pemberton is a village municipality in the Squamish-Lillooet region of southwestern British Columbia. This Pemberton Valley community is on the southwest shore of the Lillooet River and northeast shore of Pemberton Creek. On BC Highway 99, the ...
.South Coast Conservation Program Regional Dialogues on Land Use Planning for Species and Ecosystems at Risk. Proceedings Fall 2013

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Description

The sharp-tailed snake has an average total length (including tail) of as an adult. It is distinguished by its sharp tail spine, which is the protruding tip of the last tail vertebra. The spine is not toxic and cannot injure humans. Rather, the tail is used to stabilize small prey, such as slugs, for consumption. The Dorsum (anatomy), dorsal surface ranges in color from grayish brown to brown to brick red, with bubble-gum pink and peachy-orange specimens occasionally found. The ventral surface is a striking series of black and white crossbars. Stebbins RC (2003). ''A Field Guide to Western Reptiles and Amphibians, Third Edition''. The Peterson Field Guide Series ®. Boston and New York: Houghton Mifflin Company. xiii + 533 pp., 56 plates. . (''Contia tenuis'', pp. 346–347 + Plate 46 + Map 134).


Behavior

The sharp-tailed snake is a shy, secretive creature most often encountered under rocks and logs, and rarely to never found in the open. It is able to persist in urban areas where appropriate cover can be found. It is known to burrow into soft soil or cracks in the clay, and may be encountered by people who are digging in the garden or removing concrete. When encountered, the sharp-tailed snake may roll into a ball and remain still. It can be mistaken for a worm by the casual observer.


Diet

The diet of ''C. tenuis'' is largely restricted to slugs and eggs of slugs.


Reproduction

The adult female ''C. tenuis'' lays 4–16 eggs in the summer, underground or in a burrow. Each hatchling is in total length (including tail).


References


External links


''Contia tenuis''
- Description, Risk Status.

- Description, Pictures.


Further reading

* Baird SF, Girard C (1852). "Descriptions of new species of Reptiles, collected by the U. S. Exploring Expedition under the command of Capt. Charles Wilkes, U. S. N. First part.—Including the species from the Western coast of America". ''Proc. Acad. Nat. Sci. Philadelphia'' 6: 174–177. (''Calamaria tenuis'', new species, p. 176). *Baird SF, Girard CF (1853). ''Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part I.—Serpents.'' Washington, District of Columbia: Smithsonian Institution. xvi + 172 pp. (''Contia mitis'', new species, pp. 110–111). * 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, 103 figures. (''Contia tenuis'', pp. 196–197, Figure 62). * Smith HM, Brodie ED Jr (1982). ''Reptiles of North America: A Guide to Field Identification''. New York: Golden Press. 240 pp. (paperback), (hardcover). (''Contia tenuis'', pp. 162–163). * Zim HS, Smith HM (1956). ''Reptiles and Amphibians: A Guide to Familiar American Species: A Golden Nature Guide''. Revised Edition. New York: Simon and Schuster. 160 pp. (''Contia tenuis'', pp. 79–80, 156). {{DEFAULTSORT:Sharp-Tailed Snake Contia Snakes of North America Reptiles of Canada Reptiles of the United States Reptiles described in 1852 Taxa named by Spencer Fullerton Baird Taxa named by Charles Frédéric Girard