You are here » home advanced search search results Atractus attenuatus

Atractus attenuatus MYERS & SCHARGEL, 2006

Can you confirm these amateur observations of Atractus attenuatus?

Add your own observation of
Atractus attenuatus »

We have no photos, try to find some by Google images search: Google images

Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common Names 
SynonymAtractus attenuatus MYERS & SCHARGEL 2006
Atractus attenuatus — PASSOS et al. 2009
Atractus attenuatus — WALLACH et al. 2014: 68 
DistributionColombia (Sabanalarga, Antioquia: northern end of the Cordillera Central), 1000 m elevation.

Type locality: at Sabanalarga, on Cauca River, [6°51’N, 75°49’W, Department of Antioquia], Colombia. The type locality, Sabanalarga (Nicéforo María, 1942: 87, map), lies on the east bank of the Río Cauca at an elevation of about 1000 m (Paynter, 1997: 372), in the northern end of the Cordillera Central.  
TypesHolotype: AMNH 19998, an adult male obtained by Hermano Nicéforo Maria on May 16, 1921 
DiagnosisDIAGNOSIS: Atractus attenuatus is distin- guished by its exceptionally slender, drawn-out habitus, combined with 17 scale rows, a high ventral + subcaudal count (226), and an extremely vague pattern of numerous, closely spaced, indistinct crossbars. The most relevant comparison is with Atractus sanguineus, which has fewer, more widely spaced crossbars that are distinctly darker than the ground color and that are connected by a vertebral dark line. In life, the dorsal ground color of A. attenuatus is probably brown, whereas A. sanguineus is red. See Comparisons. 
CommentDescription: Atractus attenuates is a slender, exceptionally attenuated snake 420 mm in total length (adult male holotype), with 17 scale rows. a high ventral + subcaudal count (226), and an extremely vague pattern of numerous, closely spaced, indistinct dark crossbars on a brown ground color. 
EtymologyThe species name attenuatus is the passive past participle of the Latin verb attenuo (to stretch or make thin), and also (as used here) a derived adjective meaning stretched out and slender. 
  • Myers, Charles W. Schargel, Walter E. 2006. Morphological extremes - two new snakes of the genus Atractus from northwestern South America (Colubridae: Dipsadinae). American Museum Novitates (3532):1-13 - get paper here
  • Passos, Paulo, Juan C. Arredondo, Ronaldo Fernandes and John D. Lynch 2009. Three new Atractus (Serpentes: Dipsadidae) from the Andes of Colombia. Copeia 2009 (3): 425-436 - 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.
External links  
Is it interesting? Share with others:

As link to this species use URL address:

without field 'search_param'. Field 'search_param' is used for browsing search result.

Please submit feedback about this entry to the curator