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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Common Names 
SynonymAtractus avernus PASSOS, CHIESSE, TORRES-CARVAJAL & SAVAGE 2009
Atractus avernus — WALLACH et al. 2014: 69 
DistributionColombia (Caquetá)

Type locality: Paraíso (01° 14’ N, 75° 37’ W, ca. 480 m elevation), municipality of Florencia, Department of Caquetá, Colombia  
TypesHolotype: MLS 2725, adult female, collected by Brother Niceforo Maria. 
CommentThis description is based on a single female. 
EtymologyEtymology.—The specific epithet ‘‘avernus’’ is a Latin word meaning the nether world or infernal regions of the earth. This name is used herein in allusion to the apparent secretive habits of the new species. 
  • Passos, Paulo; Altagratia Chiesse, Omar Torres-Carvajal, and Jay M. Savage 2009. TESTING SPECIES BOUNDARIES WITHIN THE ATRACTUS OCCIPITOALBUS COMPLEX (SERPENTES: DIPSADIDAE). Herpetologica 65 (4): 384-403 - 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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