Osteocephalus mutabor Jungfer and Hödl, 2002

Class: Amphibia > Order: Anura > Family: Hylidae > Subfamily: Hylinae > Genus: Osteocephalus > Species: Osteocephalus mutabor

Osteocephalus mutabor Jungfer and Hödl, 2002, Amphibia-Reptilia, 23: 34. Holotype: EPN H-6658, by original designation. Type locality: "Ecuador: Provincia Napo: South slope of Volcan Sumaco on rio Pucuno, 1000 m a.s.l., between Guamani and Guagua Sumaco (0° 42′ 24″ S/77° 35′ 54″ W)".

Common Names

Changing Spiny-backed Treefrog (Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxiv). 

Rana Espinosa Cambiante (Spanish: Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxiv).

Distribution

Low to intermediate elevations on the western foothills of the Cordillera Oriental and Amazonian lowlands in Ecuador (Sucumbíos, Napo, Orellana, Pastaza, and Morona Santiago provinces) to Balta, Departaments of Ucuyali and Loreto, Peru, 204 to 1629 m elevation.

Geographic Occurrence

Natural Resident: Ecuador, Peru

Comment

Previously confused with Osteocephalus leprieurii according to the original publication. Cisneros-Heredia, 2007, Herpetozoa, Wien, 19: 183, provided a record from 54 km east of the type locality. In the Osteocephalus buckleyi species group of Jungfer, Faivovich, Padial, Castroviejo-Fisher, Lyra, Berneck, Iglesias, Kok, MacCulloch, Rodrigues, Verdade, Torres-Gastello, Chaparro, Valdujo, Reichle, Moravec, Gvoždík, Gagliardi-Urrutia, Ernst, De la Riva, Means, Lima, Señaris Vasquez, Wheeler, and Haddad, 2013, Zool. Scripta, 42: 351-380. Forti, Foratto, Márquez, Pereira, and Toledo, 2018, PeerJ, 6(e4813): 1–19, characterized the advertisement call. Metcalf, Marsh, Torres Pacaya, Graham, and Gunnels, 2020, Herpetol. Notes, 13: 753–767, reported the species from the Santa Cruz Forest Reserve, Loreto, northeastern Peru. Gagliardi-Urrutia, García Dávila, Jaramillo-Martinez, Rojas-Padilla, Rios-Alva, Aguilar-Manihuari, Pérez-Peña, Castroviejo-Fisher, Simões, Estivals, Guillen Huaman, Castro Ruiz, Angulo Chávez, Mariac, Duponchelle, and Renno, 2022, Anf. Loreto: 114–115, provided a brief account, photograph, dot map, and genetic barcode for Loreto, Peru. Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: 471–474, provided an account, with photographs, which summarized identification, adult and larval morphology, systematics, natural history, distribution (including a dot map for Ecuador), conservation, and (on p. 591) the advertisement call.

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