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Thamnophis bogerti ROSSMAN & BURBRINK, 2005

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common Names 
SynonymThamnophis bogerti ROSSMAN & BURBRINK 2005
Thamnophis bogerti — WALLACH et al. 2014: 720
Thamnophis bogerti — MATA-SILVA et al. 2015 
DistributionMexico (Oaxaca)

Type locality:  
TypesHolotype: AMNH 93237, an adult male, from Mexico, Oaxaca, El Tejocote, 2377 m elevation; collected 11 October 1964 by C. M. Bogert. 
DiagnosisDiagnosis: Thamnophis bogerti can be distinguished from all other Mexican species of the genus by the following combination of characteristics: (1) maximum DSR 17; (2) maxillary teeth 17-20; (3) top of head unpatterned; (4) two rows of relatively small black spots between light vertebral and lateral stripes; (5) nuchal blotch coloration variable, although only 15% have predominantly brown blotches; (6) prominence of black bar along posterior suture of SL 5 equal to, or less than, bar along SL 6 and 7 suture; (7) V averaging 145 in males, 140 in females; (8) SC averaging 70 in males, 62 in females; (9) tail of moderate length (mean T/TL 25% in males, 23% in females; (10) prefrontal suture usually slightly longer than internasal suture (mean PFL/INL 106%); (11) muzzle tip usually broad (mean INR/NR 115%); (12) anterior nasal usually shorter than posterior nasal (mean AN/PN 81%); (13) parietals usually of moderate length (mean FL/PL 77%); and (14) frontal usually relatively broad posteriorly (mean FWP/FWA 79%). 
CommentHabitat: oak woodland, pine-oak forest, and pine-oak-madroño forest in the Mesa del Sur of Oaxaca, exclusive of the Sierra de Juárez. Recorded elevations that are likely to be valid range from 2195-2743 m. 
EtymologyNamed after Charles Mitchill Bogert (1908-1992), former curator of the Department of Herpetology of the American Museum of Natural History. See biographical sketches in Gans 1993 and Myers & Zweifel 1993. 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Canseco-Márquez, L., & Gutiérrrez-Mayén, M.G. 2010. Anfibios y reptiles del Valle de Tehuacán-Cuicatlán. Comisión Nacional para el conocimiento y uso de la biodiversidad, México D.F., Mexico, 302 pp - 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
  • Mata-Silva, Vicente, Jerry D. Johnson, Larry David Wilson and Elí García-Padilla. 2015. The herpetofauna of Oaxaca, Mexico: composition, physiographic distribution, and conservation status. Mesoamerican Herpetology 2 (1): 6–62 - get paper here
  • Myers, C.W. & R.G. Zweifel 1993. Biographical Sketch and Bibliography of Charles Mitchill Bogert, 1908-1992 Herpetologica 49 (1): 133-146. - get paper here
  • Rossman, D.A. & Burbrink, F.T. 2005. Species limits within the Mexican garter snakes of the Thamnophis godmani complex. Occ. Papers Mus. Nat. Science (79): 1-43 - 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.
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