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Atractus crassicaudatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)

IUCN Red List - Atractus crassicaudatus - Least Concern, LC
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Higher TaxaColubridae (Dipsadinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Thickhead Ground Snake 
SynonymRhabdosoma crassicaudatum DUMÉRIL, BIBRON & DUMÉRIL 1854: 103
Rabdosoma dubium JAN 1862: 11
Rabdosoma dubium — JAN 1865
Rabdosoma crassicaudatum — JAN 1865
Atractus crassicaudatus — BOULENGER 1894: 310
Atractus Fuhrmanni PERACCA 1914: 100
Atractus colombianus PRADO 1940: 18
Atractus longimaculatus PRADO 1940: 17
Atractus crassicaudatus — DUNN 1944
Atractus crassicaudatus — PETERS & OREJAS-MIRANDA 1970: 28
Atractus crassicaudatus — PASSOS & ARREDONDO 2009
Atractus crassicaudatus — WALLACH et al. 2014: 70
Atractus longimaculatus — WALLACH et al. 2014: 75
Atractus dubius — SAVAGE & MCDIARMID 2017: 66
Atractus crassicaudatus — PASSOS et al. 2024: 9 
DistributionColombia (highlands)

Type locality: Bogotá (Cundinamarca), Colombia.  
Reproductionoviparous 
TypesSyntypes: MNHN-RA 0601, MNHN-RA 7205 and MNHN-RA 1999.7938 (formerly MNHN-RA 7205A) (3 syntypes), USNM 11138 
DiagnosisUnfortunately we had to temporarily remove additional information as this was scraped by multiple AI companies who sell that data to their customers. These details, e.g. detailed descriptions or comparisons (about 7735 characters), are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy after PETERS et al. 1970, PASSOS & LYNCH 2010, and Passos et al. 2024.

Distribution: Smith (1958) lists this species for Panama although there no other reports seems to confirm this; listings for Panama are probably based on Dunn & Bailey (1939), later repeated by Auth (1994), and Ibáñez et al. (1995; 2001); the only Panamanian record, a head-only specimen reported by Dunn & Bailey (1939) and Ibáñez et al. (1995), became the holotype of A. imperfectus Myers 2003. 
EtymologyNamed after Latin crassus, thick and Latin caudatus, provided with a tail. [“...queue courte et robuste...”]. (from Esteban Lavilla, pers. comm., May 2024) 
References
  • Bernal, R. 2025. Serpientes de Colombia-Guía de Campo. Serie de Guías Tropicales de Campo. 19: 396 pp. Conservación Internacional Colombia, Bogotá - get paper here
  • Boulenger, George A. 1894. Catalogue of the snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. British Mus. (Nat. Hist.), London, xi, 382 pp. - get paper here
  • Duméril, A.M.C., G. BIBRON & A.H.A. DUMÉRIL 1854. Erpétologie générale ou Histoire Naturelle complète des Reptiles. Vol. 7 (partie 1). Paris, xvi + 780 S. - get paper here
  • Dunn, Emmett R. 1944. Herpetology of the Bogota area. Revista de la Academia Colombiana de Ciencias Exacta, Fisicas y Naturales 6: 68-81
  • Ibáñez D., R., F.A. Arosemena, F.A. Solís & C.A. Jaramillo A. 1995. Anfibios y reptiles de la Serranía Piedras-Pacora, Parque Nacional Chagres. Scientia (Panamá) 9, 1: 17–31 [1994]
  • Jan, G. 1865. Iconographie générale des ophidiens. 11. Livraison. J.B. Bailière et Fils, Paris - get paper here
  • Páez, V.P. et al. 2002. Guía de campo de algunas especies de anfibios y reptiles de Antioquia. Universidad de Antioquia, - 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, P., Meneses-Pelayo, E., Ramos, L. O., Martins, A. R., Machado, A., Lopes, R. T., ... & Lynch, J. D. 2024. Taxonomy without borders: Revision of the genus Atractus (Serpentes: Dipsadidae) from the Andes between Colombia and Venezuela. South American Journal of Herpetology, 32(sp1), 1-123 - get paper here
  • Passos, Paulo and John D. Lynch 2010. Revision of Atractus (Serpentes: Dipsadidae) from Middle and Upper Magdalena Drainage of Colombia. Herpetological Monographs 24 (1): 149-173 - get paper here
  • Paternina, R. Felipe; Víctor H. Capera-M. 2017. Atractus crassicaudatus (Duméril, Bibron y Duméril 1854). Serpiente sabanera. Catálogo de Anfibios y Reptiles de Colombia 3 (2): 7-13 - get paper here
  • Peracca, M.G. 1914. Reptiles et Batraciens de Colombie. Pp. 96-111 In: Fuhrmann, O. and E. Mayor (eds.), Voyage d'exploration scientifique en Colombie. Memoires de la Societe neuchateloise des Sciences naturelles, 5
  • Pérez-Santos, C. E. 1986. Zoogeografía de los Ophidia en Colombia. Univ. Complutense, Madrid, 2 vols., 971 pp.
  • Pérez-Santos,C. & Moreno, A.G. 1988. Ofidios de Colombia. Museo reegionale di Scienze Naturali, Torino, Monographie VI, 517 pp.
  • Prado, A. 1940. Notas ofiológicas 4. Cinco especies novas de serpentes colombianas do genero Atractus W AGLER. Mem. Inst. Butantan, Sào Paulo 13 [1939]: 15-19 + 2 plates - get paper here
  • Prado, Alcides 1941. Notas ofiológicas 5. Observações sobre serpentes da Colombia. Mem. Inst. Butantan 14: 1-11 [1940] - get paper here
  • Smith, H.M. 1958. Handlist of the snakes of Panamá. Herpetologica 14: 222-224. - 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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