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Atractus dunni SAVAGE, 1955

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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Dunn's Ground Snake
S: Culebra minadora de Dunn 
SynonymAtractus dunni SAVAGE 1955: 14 (nom. subst. pro Rabdosoma maculatum BOCOURT 1883)
Rhabdosoma maculatum BOCOURT 1883: 539
Atractus badius — BOULENGER 1894: 308 (in part)
Atractus dunni — PETERS et al. 1970: 28
Atractus dunni — CISNEROS-HEREDIA 2005
Atractus dunni — WALLACH et al. 2014: 71 
DistributionEcuador, elevation 1530 to 1900 m [provinces of Imbabura (surroundings of Intag), Pichincha (Río Guajalito Protection Forest, La Favorita Reserve, and Bellavista Lodge near Tandayapa), and Cotopaxi (Las Pampas)]

Type locality: Ecuador  
TypesHolotype: MNHN-RA 5986 
DiagnosisDiagnosis: A species closely related to Atractus gaigeae, but distinguished from that form and other Ecuadorian Atractus as follows: (1) 17 scale rows; (2) long loreal; (3) maxillary teeth not known, probably less than nine; (4) ventrals in female holotype, 144, probably about 10 fewer in males; and (5) pattern of five longitudinal dark stripes and two series of spots [from SAVAGE 1960]. 
CommentDistribution: Not in Peru fide CISNEROS-HEREDIA 2005.

Atractus dunni is a highly variable species in terms of its coloration, having ontogenic and intraspecific variation. However, the differences between A. lehmanni Boettger, 1898 and A. dunni are subtle. 
EtymologyNamed after Emmett Reid Dunn (1894-1956) [obituary in Schmidt 1957: 75]. 
  • Arteaga AF, Bustamante-Enríquez LM and Guayasamin JM 2013. The Amphibians and Reptiles of Mindo. - get paper here
  • Averill-Murray, R.C. & Averill-Murray, A. 2017. Atractus dunni (Sleepy Groundsnake) Maximum size. Herpetological Review 48 (3): 665. - 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
  • Bocourt, M. F. 1883. In A. Duméril, M. F. Bocourt, and F. Mocquard, (1870-1909), Etudes sur les reptiles, p. i-xiv, 1-1012. In Recherches Zoologiques pour servir a l'Histoire de Ia Faune de l'Amérique Centrale et du Mexique. Mission Scientifique au Mexique et dans l'Amér Imprimerie Impériale, Paris - get paper here
  • Carrera, C. et al. 2009. Guía de Campo de los Pequeños Vertebrados del Distrito Metropolitano de Quito (DMQ). Publicación Miscelánea N° 5. Serie de Publicaciones del Museo Ecuatoriano de Ciencias Naturales (MECN) – Fondo Ambiental del MDMQ. 1-89 pp. Imprenta Nuevo Arte. Quito-Ecuador.
  • Cisneros-Heredia D.F. 2005. Rediscovery of the Ecuadorian snake Atractus dunni Savage, 1955 (Serpentes: Colubridae. Journal of the National Museum (Prague), Natural History Series 174 (1-4): 87-94
  • Savage, Jay M. 1955. Descriptions of new colubrid snakes, genus Atractus, from Ecuador. Proc. Biol. Soc. Washington 68: 11-20 - 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
  • Schmidt, K.P. 1957. Emmett Reid Dunn, 1894-1956. Copeia 1957 (2): 75-77 - 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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