Salvadora is a genus of colubrid snakes commonly called patchnose snakes or patch-nosed snakes, which are endemic to the western United States and Mexico.Conant, Roger (1975). A Field Guide to Reptiles and Amphibians of Eastern and Central North America, Second Edition. Boston: Houghton Mifflin. xviii + 429 pp. + Plates 1-48. (hardcover), (paperback). (Salvadora, pp. 187-189, Figure 42 + Plate 31 + Maps 143, 146). They are characterized by having a distinctive scale on the tip of the snout.
Species and subspecies The following species and subspecies are recognized as being valid. www.reptile-database.org.
Salvadora bairdi – Baird's patchnose snakeBeolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (Salvadori bairdi, p.14). Salvadora deserticola – Big Bend patchnose snake Salvadora grahamiae – mountain patchnose snake Salvadora gymnorhachis Salvadora hexalepis – western patchnose snake Salvadora hexalepis hexalepis – desert patchnose snake Salvadora hexalepis klauberi – Baja California patchnose snake Salvadora hexalepis mojavensis – Mojave patchnose snake Salvadora hexalepis virgultea – coast patchnose snake Salvadora intermedia – Oaxacan patchnose snake Salvadora lemniscata – Pacific patchnose snake Salvadora lineata – Texas patchnose snake Salvadora mexicana – Mexican patchnose snake
References
Further reading
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. (Salvadora, new genus, p. 104). Hernández-Jiménez CA, Flores-Villela O, Aguilar-Bremauntz A, Campbell JA (2021). “Phylogenetic relationships based on morphological data and taxonomy of the genus Salvadora Baird & Girard, 1853”. European Journal of Taxonomy 764: 85–118. Schmidt KP, Davis DD (1941). Field Book of Snakes of the United States and Canada. New York: G.P. Putnam's Sons. 365 pp. (Genus Salvadora, p. 135). Smith HM, Brodie ED Jr (1982). Reptiles of North America: A Guide to Field Identification. New York: Golden Press. 240 pp. . (Genus Salvadora, p. 194). 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. . (Genus Salvadora, p. 356). Wright AH, Wright AA (1957). Handbook of Snakes of the United States and Canada. Ithaca and London: Comstock. 1,105 pp. (in 2 volumes) (Genus Salvadora, p. 644). Zim HS, Smith HM (1956). Reptiles and Amphibians: A Guide to Familiar Species: A Golden Nature Guide. New York: Simon and Schuster. 160 pp. (Genus Salvadora, pp. 88, 156).