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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. 
EtymologyNamed after Professor Clodoveo Carrión Mora (1883-1957), and Ecuadorian natural scientist and paleontologist. After studying in Manchester and London, he returned to Ecuador he became Professor of Natural Sciences at the Colegio Bernardo Valdevisio. He collected the holotypes of the species. 
References
  • 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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