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Atractus caxiuana COSTA PRUDENTE & SANTOS-COSTA, 2006

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common Names 
SynonymAtractus caxiuana COSTA-PRUDENTE & SANTOS-COSTA 2006
Atractus caxiuana — WALLACH et al. 2014: 70
Atractus caxiuana — NOGUEIRA et al. 2019 
DistributionS Brazil (Pará) through Colombia (Vaupés)

Type locality: “Estação Científica Ferreira Penna”, Eastern Amazonia, Pará State, Brazil  
Reproductionoviparous 
TypesHolotype: MPEG 19657 
DiagnosisDiagnosis: 17-17-17 smooth dorsal scales without pits; 162 ventrals and 30 pairs of subcaudals in the single measurable male and 171 ventrals and 24 pairs of subcaudals in the single avaliable female; the three available specimens (two males and one female) has frontal wider than long; nasal contacting loreal, internasals, rostral, and the two first pairs of supralabials; loreal contacting internasal, and second and third supralabials; preocular absent; two postoculars; two light spots on the back of the head; wide-black median ventral band; and subcaudals totally black. 
CommentHabitat: rainforest 
EtymologyNamed after the type-locality, derived from the Tupi language and meaning “the place with plenty of snakes”. 
References
  • Nogueira, Cristiano C.; Antonio J.S. Argôlo, Vanesa Arzamendia, Josué A. Azevedo, Fausto E. Barbo, Renato S. Bérnils, Bruna E. Bolochio, Marcio Borges-Martins, Marcela Brasil-Godinho, Henrique Braz, Marcus A. Buononato, Diego F. Cisneros-Heredia, 2019. Atlas of Brazilian snakes: verified point-locality maps to mitigate the Wallacean shortfall in a megadiverse snake fauna. South American J. Herp. 14 (Special Issue 1):1-274 - get paper here
  • Passos, P., R. Fernandes and Borges-Nojosa, D.M. 2007. A New Species of Atractus (Serpentes: Dipsadinae) from a Relictual Forest in Northeastern Brazil. Copeia 2007 (4): 788–797 - get paper here
  • PASSOS, PAULO; ANA L. C. PRUDENTE, LUCIANA O. RAMOS, JOSÉ RANCES CAICEDO-PORTILLA, JOHN D. LYNCH 2018. Species delimitations in the Atractus collaris complex (Serpentes: Dipsadidae). Zootaxa 4392 (3): 491–520 - get paper here
  • PASSOS, PAULO; LUCIANA O. RAMOS, PEDRO H. PINNA, ANA L.C. PRUDENTE 2013. Morphological variation and affinities of the poorly known snake Atractus caxiuana (Serpentes: Dipsadidae). Zootaxa 3745 (1): 035–048 - get paper here
  • Prudente, A. L. da & Santos-Costa, M. C. dos 2006. A new species of Atractus Wagler, 1828 (Serpentes: Colubridae) from Eastern Amazonia, Brazil. Zootaxa 1285: 21–29 - get paper here
  • Prudente, Ana L.C and Paulo Passos 2008. New Species of Atractus Wagler, 1828 (Serpentes: Dipsadinae) from Guyana Plateau in Northern Brazil. Journal of Herpetology 42 (4): 723 - 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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