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Thamnophis conanti ROSSMAN & BURBRINK, 2005

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Conant's Gartersnake
S: Jarretera de Conant 
SynonymThamnophis conanti ROSSMAN & BURBRINK 2005: 29
Thamnophis conanti — WALLACH et al. 2014: 720 
DistributionMexico (Puebla-Veracruz state line)

Type locality: Mexico, Puebla-Veracruz state line at Mexico Highway 125 [number in error, it is Highway 150 that extends north from Tehuacan, Puebla, to the state line at Puerto del Aire]  
Reproductionovovivparous 
TypesHolotype: LSUM 75985 (originally USL 23933), an adult female, collected 15 August 1975 by Tom Hardaway. 
DiagnosisDiagnosis: Thamnophis conanti can be distinguished from all other Mexican species of the genus by the following combination of characteristics: (1) maximum DSR 17; (2) maxillary teeth 16-18; (3) top of head unpatterned; (4) two rows of relatively small black spots between the light vertebral and lateral stripes; (5) nuchal blotches predominantly brown; (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 150 in males, 144 in females; (8) SC averaging 72 in males, 64 in females; (9) tail of moderate length (mean T/TL 25% in males, 23% in females); (10) prefrontal suture usually slightly longer than the internasal suture (mean PFL/INL 105%); (11) muzzle tip usually moderately broad (mean INR/NR 107%); (12) anterior nasal usually shorter than posterior nasal (mean AN/PN 77%); (13) parietals usually of moderate length (mean FL/PL 75%); and (14) frontal usually of moderate width posteriorly (mean FWP/FWA 75%). (Rossman & Burbrink 2005) 
CommentSynonymy: Grünwald et al. 2024 suggested that T. lineri and T. conanti are junior synonyms of T. bogerti, given their minor genetic differences. All 3 species were described in the same paper and Grünwald et al. used Article 24.2 of the ICZN 1999 Code to designate T. bogerti as senior name by the page priority. 
EtymologyNamed after Roger Conant (1909-2003), American herpetologist. 
References
  • 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
  • Grünwald, C. I., María del Carmen, G., Grünwald, A. J., Montaño-Ruvalcaba, C., Franz-Chávez, H., García-Vázquez, U. O., & Reyes-Velasco, J. 2024. A new species of Thamnophis (Serpentes, Colubridae) from Jalisco, Mexico, with a discussion on the phylogeny, taxonomy, and distribution of snakes related to Thamnophis scalaris. Herpetozoa, 37, 157-179 - 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
  • 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
  • Torres-Hernández, LA, Ramírez-Bautista A, Cruz-Elizalde R, Hernández-Salinas U, Berriozabal-Islas C, DeSantis DL, Johnson JD, Rocha A, García-Padilla E, Mata-Silva V, Fucsko LA, and Wilson LD. 2021. The herpetofauna of Veracruz, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 15(2) [General Section]: 72–155 - 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.
  • Woolrich-Piña, G. A., E. García-Padilla, D. L. DeSantis, J. D. Johnson, V. Mata-Silva, and L. D. Wilson 2017. The herpetofauna of Puebla, Mexico: composition, distribution, and conservation status. Mesoamerican Herpetology 4(4): 791–884 - get paper here
 
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