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Atractus insipidus ROZE, 1961

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common Names 
SynonymAtractus insipidus ROZE 1961: 106
Atractus insipidus — PETERS & OREJAS-MIRANDA 1970: 30
Atractus insipidus — DA CUNHA & DO NASCIMENTO 1983: 10
Atractus insipidus — KORNACKER 1999: 64
Atractus insipidus — WALLACH et al. 2014: 74 
DistributionS Venezuela, N Brazil

Type locality: “Poste M-1, próximo ao rio Uraricapará, fronteira Venezuela-Brasil”, (04°01’08’’N, 62°33’14’’W; 952 m elevation [ca. 400 m as incorrectly stated by Roze, 1961]) Map legend:
Type locality - Type locality.
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproductionoviparous 
TypesHolotype: MBUCV 3957 
CommentDiagnosis. Atractus insipidus can be distinguished from all congeners by the following combination of characters (data between brackets are those of Roze, 1961): (1) smooth dorsal scale rows 15/15/15; (2) postoculars two; (3) loreal long; (4) temporals 1 + 2; (5) supralabials seven, third and fourth contacting orbit; (6) infralabials seven, first four contacting chin shields; (7) maxillary teeth seven; (8) gular scale rows three; (9) preventrals three; (10) ventrals 157 in the single male; (11) subcaudals 34 [36] in the single male; (12) in preservation, dorsum light brown with irregular dark brown spots concentrated on vertebral and paravertebral regions; (13) in preservation, venter immaculate cream; (14) body size small in male, 206 mm SVL [205]; (15) tail moderate in male (13.6% [14.6] SVL); (16) hemipenis moderately bilobed and semi- calyculate [PASSOS et al. 2013]. 
References
  • BERNARDE, P.S., ALBUQUERQUE, S., BARROS, T.O. & TURCI, L.C.B. 2012. Serpentes do Estado de Rondônia, Brasil. Biota Neotrop. 12(3): 1-29 - get paper here
  • Cunha, O R da; do Nascimento F P 1983. Ofidios da Amazonia. 20 - As especies de Atractus Wagler, 1828, na Amazonia oriental & Maranhao (Ophidia, Colubridae). Boletim do Museu Paraense Emilio Goeldi NOVA SERIE ZOOLOGIA (No. 123): 1-38
  • Kornacker,P.M. 1999. Checklist and key to the snakes of Venezuela. PaKo-Verlag, Rheinbach, Germany, 270 pp.
  • Lancini,A.R. & Kornacker,P.M. 1989. Die Schlangen von Venezuela. Armitano Editores C.A., Caracas, 1-381
  • 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, Paulo; Ana L.C. Prudente and John D. Lynch 2016. Redescription of Atractus punctiventris and Description of Two New Atractus (Serpentes: Dipsadidae) from Brazilian Amazonia. Herp. Monographs 30 (1): 1-20 - get paper here
  • Passos, Paulo; Philippe J. R. Kok, Nelson R. de Albuquerque, and Gilson A. Rivas 2013. Groundsnakes of the Lost World: A Review of Atractus (Serpentes: Dipsadidae) from the Pantepui Region, Northern South America. Herpetological Monographs 27 (1): 52-86 - 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
  • Roze, Jánis A. 1961. El genero Atractus (Serpentes: Colubridae) en Venezuela. Acta Biologica Venezuelica 3 (7): 103-119
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. Taylor and Francis, CRC Press, 1237 pp.
 
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