''Salvadora'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

colubrid Colubridae (, commonly known as colubrids , from , 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the family date back to the Late Eocene epoch, with earlier origins suspected. Colu ...

snake Snakes are elongated limbless reptiles of the suborder Serpentes (). Cladistically squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales much like other members of the group. Many species of snakes have s ...

s commonly called patchnose snakes or patch-nosed snakes, which are

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the western

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

and

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

. They are characterized by having a distinctive scale on the tip of the snout.

Species and subspecies

The following

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

and

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

are recognized as being valid. *'' Salvadora bairdi'' – Baird's patchnose snake Beolens, 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

* 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). Salvadora Snake genera Taxa named by Spencer Fullerton Baird Taxa named by Charles Frédéric Girard {{Colubrinae-stub

Species and subspecies

References

Further reading