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Atractus carrioni PARKER, 1930

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Parker's Ground Snake 
SynonymAtractus carrioni PARKER 1930: 208
Atractus carrioni — PETERS 1960
Atractus carrioni — PASSOS & ARREDONDO 2009
Atractus carrioni — WALLACH et al. 2014: 70 
DistributionEcuador (Loja)

Type locality: Loja, Ecuador, 2200 m elevation.  
Reproductionoviparous 
TypesHolotype: BMNH 1929.10.30.1, female; collected by Professor Clodoveo Carrion. Paratype: (n=1) a male from the type-loeality, in Professor Carrion's collection. 
DiagnosisDIAGNOSIS: An Atractus unique within the genus in having no loreal shield. Readily distinguished by the following combination of characteristics: (1) 15 scale rows; (2) no loreal, although a small preocular sometimes present; (3) maxillary teeth eight or nine; (4) ventrals in males, 145-149 (146) in females, 152-159 (155); and (5) dorsal coloration essentially uniform dark gray or brown [from SAVAGE 1960].


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CommentSimilar species: A. roulei. The two species differ primarily in the presence in roulei and absence in carrioni of the loreal shield. 
References
  • Arteaga, A.; Bustamante, L.; Vieira, J. 2024. Reptiles of Ecuador. Khamai Foundation & Tropical Herping, 1073 pp. - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • CISNEROS-HEREDIA, D. F. 2005. Report of molluscivory in Atractus carrioni PARKER, 1930 [Short Note]. Herpetozoa 18: 185- 186 - get paper here
  • Parker,H.W. 1930. A new colubrine snake from Ecuador. Ann. Mag. nat. Hist. (10) 5: 207-209 - get paper here
  • Passos, P. & Arredondo, J.C. 2009. Rediscovery and redescription of the Andean earth-snake Atractus wagleri (Reptilia: Serpentes: Colubridae). Zootaxa 1969: 59–68 - get paper here
  • Passos, Paulo; Lourdes Y. Echevarría, and Pablo J. Venegas 2013. Morphological Variation of Atractus carrioni (Serpentes: Dipsadidae). South American J. Herp. 8 (2): 109-120. - get paper here
  • Savage,J.M. 1960. A revision of the Ecuadorian snakes of the colubrid genus Atractus. Misc. Publ. Zool. Univ. Michigan 112: 1-86 - get paper here
  • Torres-Carvajal O, Pazmiño-Otamendi G, Salazar-Valenzuela D. 2019. Reptiles of Ecuador: a resource-rich portal, with a dynamic checklist and photographic guides. Amphibian & Reptile Conservation 13 (1): [General Section]: 209–229 (e178) - 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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