Synapturanus rabus Pyburn, 1977

Class: Amphibia > Order: Anura > Family: Microhylidae > Subfamily: Otophryninae > Genus: Synapturanus > Species: Synapturanus rabus

Synapturanus rabus Pyburn, 1977 "1976", Herpetologica, 32: 367. Holotype: USNM 199674, by original designation. Type locality: "S side of the Vaupés River near the village of Yapima (long. 69° 28′ W, lat. 1° 03′ N), Colombia".

Common Names

Dark Brown Snouted Frog (Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxv). 

Ranita Hocicuda Café Obscura (Spanish: Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: xxxv).

Vaupes Disc Frog (Frank and Ramus, 1995, Compl. Guide Scient. Common Names Amph. Rept. World: 93).

Distribution

Southeastern Vaupés, Colombia; likely into adjacent Amazonas, Brazil. Records from Ecuador and northeastern Peru likely apply to one of several new species recently delimited although the species may yet be confirmed for Ecuador. 

Geographic Occurrence

Natural Resident: Colombia

Likely/Controversially Present: Brazil, Ecuador, Peru

Comment

Vriesendorp, 2008, Perú: Matsés (Field Mus. Rapid Biol. Invent.): 143, 151, reported this species from near Río Blanco, Loreto Province, Peru. López-Rojas and Cisneros-Heredia, 2012, Check List, 8: 274-275, provided a record for northeastern Peru and commented on the range. 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, although this record likely. See  Osorno-Muñoz, Gutiérrez-Lamus, Lynch, Keefe, Caicedo-Portilla, Chan, Tonini, and de Sá, 2023, Zootaxa, 5258: 151–196, for a revision and additional species previously confused with Synapturanurus rabus likely affecting the delimitation and distribution of this species. Coloma and Duellman, 2025, Amph. Ecuador. Vol. 2: 44–46, provided an account, with photographs, which summarized identification, adult morphology, systematics, natural history, distribution (including a dot map for Ecuador), and conservation. 

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