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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common Names 

Type locality: Cosanga– Archidona road (00°37’S, 77°48’W; 2200 m) in the Cordillera de Los Guacamayos, Province of Napo, Ecuador.  
Reproductionoviparous (not imputed, fide Zimin et al. 2022) 
TypesHolotype: USFQ 517 (was FHGO), adult female, collected dead on road on 16 August 1992 by Peter Pearman. Paratypes. Two adult females, FHGO 2035 and FHGO 2036, collected dead on road on 5 April 1998 by Felipe Campos at La Virgen (ca. 2000 m) in the Cordillera de Los Guacamayos, Province of Napo, Ecuador. 
DiagnosisDiagnosis: A species of Atractus with 17 dorsal scales rows differing from all other members of the genus by the following combination of characters: (1) large size and thick body, adults reaching more than 1000 mm in TL; (2) loreal long (about three times longer than high); (3) eight supralabials, four and five in contact with eye; (4) seven or eight infralabials; (5) eight maxillary teeth; (6) 167–170 ventral scales in females; (7) Tail of moderate length Tail/TL 9.5–11.4%; (8) 31 subcaudal scales in females; (9) dorsal color pattern of short pale crossbands edged by black borders that separate the pale color from the brown ground color. 
EtymologyWe take great pleasure in naming the new species after Jean-Marc Touzet, an enthusiastic promoter of herpetology in Ecuador and the founder of the Fundación Herpetológica Gustavo Orcés. 
  • Melo-Sampaio PR, Venegas PJ 2023. A new species of groundsnake genus Atractus Wagler, 1828 (Serpentes, Dipsadidae) from the Peruvian Andes revealed by unequivocal morphological characters. Evolutionary Systematics 7(2): 257-266 - get paper here
  • PASSOS, PAULO; AGUSTÍN SCANFERLA; PAULO R. MELO-SAMPAIO; JORGE BRITO; ANA ALMENDARIZ 2018. A giant on the ground: another large-bodied Atractus (Serpentes: Dipsadinae) from Ecuadorian Andes, with comments on the dietary specializations of the goo-eaters snakes. An. Acad. Bras. Ciênc. - get paper here
  • SCHARGEL, WALTER E.; WILLIAM W. LAMAR, PAULO PASSOS, JORGE H. VALENCIA, DIEGO F. CISNEROS-HEREDIA, JONATHAN A. CAMPBELL 2013. A new giant Atractus (Serpentes: Dipsadidae) from Ecuador, with notes on some other large Amazonian congeners. Zootaxa 3721 (5): 455–474 - get paper here
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
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