Tantilla hobartsmithi, commonly known as the southwestern blackhead snake, Smith's blackhead snake, or Smith's black-headed snake, is a species of small colubrid snake native to the southwestern United States and northern Mexico.
Taxonomy and systematics
T. hobartsmithi was first described by Edward Harrison Taylor in 1936.
The southwestern blackhead snake is a small snake, growing to a maximum total length (including tail) of 15 in (38 cm), but typically averaging around 8 in (20 cm) in total length.
Dorsally, it is uniformly brown in color, except for the black-colored head, which gives it its common name, and a cream-colored or white collar. On the belly, there is a broad reddish stripe, which runs down the center of the ventral scales.
The southwestern blackhead snake is found in the southwestern United States, in Arizona, California, Colorado, Nevada, New Mexico, Texas, and Utah, as well as in northern Mexico, in Chihuahua, and Coahuila, and Sonora.
In California, it was sighted in Darwin Falls, Death Valley National Park, on May 18 of 2012, and in Jamul on May 16 of 2016. It has also been seen in Sedona Arizona of Yavapai County on April 11, 2005.
- "Tantilla hobartsmithi ". The Reptile Database. www.reptile-database.org.
- 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. (Tantilla hobartsmithi, p. 247).
- 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. ISBN 0-395-98272-3 (paperback). (Tantilla hobartsmithi, p. 400 + Figures 28 & 29 on p. 398 + Map 177 on p. 503).
- "Tantilla hobartsmithi". Discover Life. Retrieved July 9, 2006.
- "Smith's Black-headed Snake". Retrieved March 22, 2013.
- Blanchard FN (1938). "Snakes of the Genus Tantilla in the United States". Zool. Ser. Field Mus. Nat. Hist. 20 (28): 369-376. (Tantilla utahensis, new species, p. 372).
- Taylor EH (1936). "Notes and Comments on Certain American and Mexican Snakes of the Genus Tantilla, with Descriptions of New Species". Trans. Kansas Acad. Sci. 39: 335-348. (Tantilla hobartsmithi, new species, p. 340).
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