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Atractus taphorni SCHARGEL & GARCÍA-PÉREZ, 2002

IUCN Red List - Atractus taphorni - Endangered, EN

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common Names 
SynonymAtractus taphorni SCHARGEL & GARCÍA-PÉREZ 2002
Atractus taphorni — PASSOS et al. 2009
Atractus taphorni — WALLACH et al. 2014: 81
Atractus taphorni — PASSOS et al. 2024: 83 
DistributionVenezuela (Mérida: Cordillera de Mérida)

Type locality: La Carbonera, Cordillera de Mérida, 2200 m, Mérida, Venezuela (8°37’52’’ N, 71°22’08’’ W)  
Reproductionoviparous 
TypesHolotype: MCNG 1905, adult male, collected 26 July 1993 by A. Lobo 
DiagnosisDiagnosis: Atractus taphorni can be distinguished from all congeners by the following combination of characters: (1) dorsal scale rows smooth, 15/15/15; (2) postoculars two; (3) loreal long; (4) temporal formula 1 + 2; (5) supralabials usually seven, 3 and 4 contacting eye; (6) infralabials usually seven, 1−3 contacting chinshields; (7) maxillary teeth 10−12; (8) gular scale rows usually three; (9) preventrals usually three (10) ventrals 150−160 in females, 153−155 in males; (11) subcaudals 17−20 in females, 23−29 in males; (12) in preservative, dorsum dark brown or black with vertebral and dorsolateral black stripe cream bordered; (13) in preservative, ventral ground color dark brown to black, sometimes with cream lateral stripes covering paraventral region; (14) moderate body size, females reaching 433 mm SVL, males 408 mm SVL; (15) tail length moderate long in females (10.0−11.7% SVL) and males (11.8−14.2% SVL); (16) hemipenis slightly bilobed, non‐capitate, non‐calyculate; (17) laterosphenoid present, well developed. (Passos et al. 2024)


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Comment 
EtymologyNamed after Donal C. Taphorn, founder of the Museum of Zoology of the Biocentro-UNELLEZ (MCNG). 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Esqueda, L.F. & E. La Marca 2005. Revisión taxonómica y biogeográfica (con descripción de cinco nuevas especies) de serpientes del género Atractus (Colubridae: Dipsadinae) en los Andes de Venezuela. Herpetotropicos 2 (1): 1-32 - get paper here
  • Esqueda, L.F., Rojas-Runjaic, F.J., Prudente, A.; Santos Bazó, Luis Fernando Navarrete, Edward Carmargo-Sillet, Juan Carlos Ortiz, Claudio Correa, Pablo Guerrero & Félix Urra 2025. A first phylogenetic and taxonomic approach to sleepyhead snakes from Venezuela (Dipsadidae: Atractus), with the description of two new Andean species. Org Divers Evol. - get paper here
  • Natera-Mumaw, Marco; Luis Felipe Esqueda-González & Manuel Castelaín-Fernández 2015. Atlas Serpientes de Venezuela. Santiago de Chile, Dimacofi Negocios Avanzados S.A., 456 pp. - get paper here
  • Passos, P., Meneses-Pelayo, E., Ramos, L. O., Martins, A. R., Machado, A., Lopes, R. T., ... & Lynch, J. D. 2024. Taxonomy without borders: Revision of the genus Atractus (Serpentes: Dipsadidae) from the Andes between Colombia and Venezuela. South American Journal of Herpetology, 32(sp1), 1-123 - get paper here
  • RIVAS, GILSON A.; CÉSAR R. MOLINA, GABRIEL N. UGUETO, TITO R. BARROS, CÉSAR L. BAR- RIO-AMORÓS & PHILIPPE J. R. KOK 2012. Reptiles of Venezuela: an updated and commented checklist. Zootaxa 3211: 1–64 - get paper here
  • Schargel, Walter E. and Juan E. García-Pérez 2002. A new species and a new record of Atractus (Serpentes: Colubridae) from the Andes of Venezuela. Journal of Herpetology 36 (3): 398-402 - 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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