Nymphargus anomalus (Lynch and Duellman, 1973)

Class: Amphibia > Order: Anura > Family: Centrolenidae > Subfamily: Centroleninae > Genus: Nymphargus > Species: Nymphargus anomalus

Centrolenella anomala Lynch and Duellman, 1973, Occas. Pap. Mus. Nat. Hist. Univ. Kansas, 16: 14. Holotype: KU 143299, by original designation. Type locality: "Río Azuela, 1740 m, Quito--Lago Agrio road, Provincia Napo, Ecuador".

Cochranella anomalaRuiz-Carranza and Lynch, 1991, Lozania, 57: 21.

Nymphargus anomalusCisneros-Heredia and McDiarmid, 2007, Zootaxa, 1572: 34.

Common Names

Anomalous Glassfrog (Guayasamin, Cisneros-Heredia, McDiarmid, Peña, and Hutter, 2020, Diversity, 12 (222): 143; Coloma and Duellman, 2025, Amph. Ecuador. Vol. 4: xxix). 

Rana de Cristal Anómala (Coloma and Duellman, 2025, Amph. Ecuador. Vol. 4: xxix).

Napo Cochran Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 46).

Distribution

Known only from the Amazonian slopes of the Ecuadorian Andes, Provinces of Napo, Pastaza, Tungurahua, and Morona Santiago, at elevations of 1497–1795 m elevation. 

Geographic Occurrence

Natural Resident: Ecuador

Endemic: Ecuador

Comment

In the Cochranella ocellata group according to Ruiz-Carranza and Lynch, 1991, Lozania, 57: 1-30. Cisneros-Heredia and McDiarmid, 2007, Zootaxa, 1572: 46, corrected the diagnosis. See photograph, map, description of geographic range and habitat, and conservation status (as Cochranella anomala) in Stuart, Hoffmann, Chanson, Cox, Berridge, Ramani, and Young, 2008, Threatened Amph. World: 212. See account by Rada, Ospina-Sarria, and Guayasamin, 2017, S. Am. J. Herpetol., 12: 137–141. Guayasamin, Cisneros-Heredia, McDiarmid, Peña, and Hutter, 2020, Diversity, 12 (222): 143–146, provided a detailed account, including natural history. J. M. Guayasamin, L. A. Coloma, and A. Terán-Valdez in Coloma and Duellman, 2025, Amph. Ecuador. Vol. 4: 256–259, provided an account, with photographs, which summarized identification, adult and larval morphology, systematics, natural history, distribution (including a dot map), and conservation.  

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