Thamnophis nigronuchalis THOMPSON, 1957

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Higher Taxa	Colubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Southern Durango Spotted Garter Snake G: Südliche Durango-Strumpfbandnatter S: Jarretera Manchada de Durango
Synonym	Thamnophis nigronuchalis THOMPSON 1957 Thamnophis rufipunctatus nigronuchalis — TANNER 1985: 650 Thamnophis nigronuchalis — ROSSMAN et al. 1996: 215 Thamnophis nigronuchalis — DE QUEIROZ et al. 2002 Thamnophis nigronuchalis — WALLACH et al. 2014: 723
Distribution	Mexico (SW Durango, Nayarit) Type locality: Mexico, Durango, San Luis, ca. 2743 m elevation.
Reproduction	ovoviviparous.
Types	Holotype: UMMZ 113611
Diagnosis	Diagnosis: A subspecies of rufipunctatus with supralabials 4 and 5 having a wide contact with the eye and with a single, dark, median nuchal spot. (Tanner 1985) Unfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data. However, these details, e.g. detailed descriptions (about between half a page and a page) are available for collaborators and contributors. Please contact us if you need any of this material.
Comment	Distribution: see map in Wood et al. 2011: 3858. Diet: see Heptinstall et al. 2024
Etymology	Named after its single, broad nuchal blotch which is very dark brown to black, from Latin nigro, black, dark, and Latin nucha = back of the neck or nape.
References	Burbrink FT, Futterman I. 2019. Female‐ biased gape and body-size dimorphism in the New World watersnakes (tribe: Thamnophiini) oppose predictions from Rensch's rule. Ecol Evol. 00:1–10 - get paper here de Queiroz,K. & LAWSON,R. 1994. Phylogenetic relationships of the garter snakes based on DNA sequence and allozyme vatiation. Biol. J. Linnean Soc. 53: 209-229 - get paper here HALLAS, JOSHUA M.; THOMAS L. PARCHMAN & CHRIS R. FELDMAN. 2021. Phylogenomic analyses resolve relationships among garter snakes (Thamnophis: Natricinae: Colubridae) and elucidate biogeographic history and morphological evolution. Molecular Phylogenetics and Evolution 107374. [2022 in print] - get paper here Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp Heptinstall, Tucker C.; Ramses A. Rosales-Garcia, Rhett M. Rautsaw, Erich P. Hofmann, Alan De Queiroz, Luis Canseco-Márquez & Christopher L. Parkinson 2024. Size Doesn't Matter: Body Size is Not Linked to Diet Specialization in Garter Snakes (Squamata: Natricidae: Thamnophis) Journal of Herpetology 58 (2): 122-134 - get paper here Lemos-Espinal JA, Smith GR, Gadsden-Esparza H, Valdez-Lares R, Woolrich-Piña GA 2018. Amphibians and reptiles of the state of Durango, Mexico, with comparisons with adjoining states. ZooKeys 748: 65-87 - get paper here Loc-Barragán JA, Smith GR, Woolrich-Piña GA, Lemos-Espinal JA 2024. An updated checklist of the amphibians and reptiles of Nayarit, Mexico with conservation status and comparison with adjoining States. Herpetozoa 37: 25-42 - get paper here Rossman, Douglas A.; Ford, Neil B. & Seigel, Richard A. 1996. The Garter Snakes: Evolution and Ecology. University of Oklahoma Press, Norman, OK, xx + 332 + pp. Tanner, Wilmer W. 1985. Snakes of Western Chihuahua. Great Basin Naturalist 45 (4): 615-676 - get paper here Thompson, Fred G. 1957. A new Mexican gartersnake (Genus Thamnophis) with notes on related forms. Occasional Papers of the Museum of Zoology, University of Michigan (584): 1-10 - get paper here Valdez-Lares, R.; R. Muñiz-Martínez; E.Gadsden; G. Aguirre-León; G. Castañeda-Gaytán; R. Gonzalez-Trápaga 2013. Checklist of amphibians and reptiles of the state of Durango, México. Check List 9 (4):714-724 - get paper here Wallach, Van; Kenneth L. Williams, Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp. Webb, R.G. 1984. Herpetogeography in the Mazatlán-Durango Region of the Sierra Madre Occidental, Mexico. Vetrebrate Ecology and Systematics - A ribute to Henry S. Fitch; Museum of Natural History, University of Kansas, Lawrence, pp. 217-241 Woolrich-Piña, Guillermo A, Paulino Ponce-Campos, Jesús Loc-Barragán, Juan Pablo Ramírez-Silva, Vicente Mata-Silva, Jerry D. Johnson, Elí García-Padilla and Larry David Wilson. 2016. The herpetofauna of Nayarit, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 3 (2): 376-448 - get paper here
External links	IUCN Red List National Center for Biotechnology Information https://www.facebook.com/groups/stshc/posts/391513423073262 Google images

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