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Atractus duidensis ROZE, 1961

IUCN Red List - Atractus duidensis - Least Concern, LC

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes) 
Subspecies 
Common NamesVenezuela Ground Snake 
SynonymAtractus duidensis ROZE 1961: 110
Atractus duidensis — PETERS & OREJAS-MIRANDA 1970: 28
Atractus duidensis — KORNACKER 1999: 63
Atractus duidensis — PASSOS et al. 2013
Atractus duidensis — WALLACH et al. 2014: 71 
DistributionVenezuela (Cerro Duida, TF Amazonas)

Type locality: Cumbre del Cerro Duida, Territorio Federal Amazonas, Venezuela, 03°25’N, 65°40’W; ca. 2050 m elevation. 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: AMNH 36609, adult male, collected on 28 January 1929 by members of the Tyler-Duida expedition.
Paratype. Adult female, AMNH 36607, same data as holotype. 
CommentDiagnosis.—Atractus duidensis can be dis- tinguished from all congeners by the following combination of characters (data between brackets are those of Roze, 1961): (1) smooth dorsal scale rows 17/17/17; (2) postoculars two; (3) loreal long; (4) temporals 1 + 2; (5) supralabials seven, third and fourth contacting orbit; (6) infralabials seven, first three con- tacting chin shields; (7) maxillary teeth eight or nine; (8) gular scale rows three; (9) preventrals two or three; (10) ventrals 171 [173] and 156 in the single female and male, respectively; (11) subcaudals 36 [35] in the single female, male tail incomplete; (12) in preservation, dorsum uniform grayish brown to black in adults; (13) in preservation, venter creamish yellow anteriorly, gradually invaded by brown dots, becoming uniform brown posteriorly in adults; (14) body size moderate, female reaching 400 mm [415] and male 306 mm [315] SVL; (15) tail moderate in female (13.7% [11.7] SVL) [PASSOS et al. 2013]. 
References
  • Hoogmoed, M.S. 1982. Snakes of the Guianan Region. Mem. Inst. Butantan 46: 219-254. - get paper here
  • 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; 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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