Oscaecilia bassleri (Dunn, 1942)

Class: Amphibia > Order: Gymnophiona > Family: Caeciliidae > Genus: Oscaecilia > Species: Oscaecilia bassleri

Caecilia bassleri Dunn, 1942, Bull. Mus. Comp. Zool., 91: 518. Holotype: MCZ 19401, by original designation. Type locality: "Pastaza R. (Canelos to Marañón)", Ecuador.

Oscaecilia bassleriTaylor, 1968, Caecilians of the World: 598.

English Names

Pastaza River Caecilian (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 24).


Lower Amazonian slopes and western Amazon Basin of Colombia, Ecuador, and Peru, possibly into adjacent Brazil and Bolivia.

Geographic Occurrence

Natural Resident: Colombia, Ecuador, Peru

Likely/Controversially Present: Bolivia, Brazil


De la Riva, Köhler, Lötters, and Reichle, 2000, Rev. Esp. Herpetol., 14: 58, consider this species possibly to occur in Bolivia. Lynch, 2000 "1999", Rev. Acad. Colomb. Cienc. Exact. Fis. Nat., 23: 330, suggested that the species might be found in Colombia. Taylor and Peters, 1974, Univ. Kansas Sci. Bull., 50: 338, commented on the Ecuadorian specimens. Duellman, 1978, Misc. Publ. Mus. Nat. Hist. Univ. Kansas, 65: 80, provided a brief account for Amazonian Ecuador. Lynch, 2007, In Diversidad Biol. Cult. Amazon. Colomb. 2: 165, reported the species in Amazonas, Colombia. See brief account for the Manu region, Peru, by Villacampa-Ortega, Serrano-Rojas, and Whitworth, 2017, Amph. Manu Learning Cent.: 262–263.

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