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Thamnophis unilabialis (TANNER, 1985)

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Madrean Narrowheaded Garter Snake
S: Jarretera Cabeza-angosta 
SynonymThamnophis rufipunctatus unilabialis TANNER 1985: 648
Thamnophis unilabialis — WOOD et al. 2011
Thamnophis unilabialis — WALLACH et al. 2014: 727 
DistributionMexico (E Sonora, Chihuahua, Durango)

Type locality: 0.5 mi SW of Bocoyna, Chihuahua, Mexico.  
TypesHolotype: BYU 14217, adul female; paratypes: BYU, ASU, UAZ, NMMZ, AMNH, UTEP 
CommentSynonymy: Thamnophis rufipunctatus unilabialis TANNER 1985 has been considered as a synonym of Thamnophis rufipunctatus (ROSSMAN et al. 1996: 39).

Distribution: see map in Wood et al. 2011: 3838. 
  • Heimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp
  • 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
  • Lemos-Espinal JA, Smith GR, Rorabaugh JC 2019. A conservation checklist of the amphibians and reptiles of Sonora, Mexico, with updated species lists. ZooKeys 829: 131-160 - get paper here
  • Rorabaugh, J C; Turner, D; van Devender, T R; Hugo-Cabrera, V; Maynard, R J; Van Devender, R W; Villa, R A; Hamilton, P; Hale, S F; Aguilar-Morales, C; Blanco-Gutiérrez, A; Wallace, E & Hedgcock, C; 2019. Herpetofauna of the Mesa Tres Ríos area in the Northern Sierra Madre Occidental of Sonora, Mexico. Herpetological Review 50 (2): 251-259 - get paper here
  • Tanner, Wilmer W. 1985. Snakes of Western Chihuahua. Great Basin Naturalist 45 (4): 615-676 - 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.
  • Wood, Dustin A.; A. G. Vandergast, J . A. Lemos Espinal, R. N. Fisher & A. T. Holycross 2011. REFUGIAL ISOLATION AND DIVERGENCE IN THE NARROWHEAD GARTER SNAKE SPECIES COMPLEX (THAMNOPHIS RUFIPUNCTATUS) AS REVEALED BY MULTILOCUS DNA SEQUENCE DATA. Molecular Ecology 20: 3856–3878 - get paper here
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