Osornophryne simpsoni Páez-Moscoso, Guayasamin, and Yánez-Muñoz, 2011

Class: Amphibia > Order: Anura > Family: Bufonidae > Genus: Osornophryne > Species: Osornophryne simpsoni

Osornophryne simpsoni Páez-Moscoso, Guayasamin, and Yánez-Muñoz, 2011, ZooKeys, 108: 80. Holotype: QCAZ 49774, by original designation. Type locality: "near San Rafael-Chontayacu (1° 16′ 34.61″ S, 78° 4′ 21.14″ W, 2266 m.a.s.l.), Reserve Ankaku-Zona, Río Challuwayacu, Provincia de Pastaza, Ecuador".

Common Names

Simpson's Toadlet (Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxi). 

Sapito de Simpson (Spanish: Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxi).

Distribution

Known from two populations separated by about 12.8 km in the Cordillera Oriental of the Andes in Napo, Tungurahua, and Pastaza provinces, Ecuador, 2039 to 2187 m elevation. 

Geographic Occurrence

Natural Resident: Ecuador

Endemic: Ecuador

Comment

The sister species of Osornophryne occidentalis according to the original publication. Reyes-Puig, Reyes-Puig, Franco-Mena, Jost, and Yánez-Muñoz, 2022, ZooKeys, 1081: 51, provided a record from Machay Reserve, Tungurahua Province, Ecuador. Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: 265–266, provided an account, with photographs, which summarized identification, adult morphology, systematics, natural history, distribution (including a dot map), and conservation.

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