Engystomops freibergi (Donoso-Barros, 1969)

Class: Amphibia > Order: Anura > Family: Leptodactylidae > Subfamily: Leiuperinae > Genus: Engystomops > Species: Engystomops freibergi

Eupemphix freibergi Donoso-Barros, 1969, Bol. Soc. Biol. Concepción, 41: 183. Holotype: Donoso-Barros 745, now at IZUC. Type locality: "Runerrabaque, Río Beni, Bolivia"(= Rurrenabaque, Departamento El Beni, Bolivia, according to Cannatella and Duellman, 1984, Copeia, 1984: 909).

Physalaemus freibergi — Cannatella, Hillis, Chippindale, Weigt, Rand, and Ryan, 1998, Syst. Biol., 47: 311–335.

Engystomops freibergi — Nascimento, Caramaschi, and Cruz, 2005, Arq. Mus. Nac., Rio de Janeiro, 63: 297–320. By implication (see comment).

English Names

Freiberg's Forest Toadlet (Villacampa-Ortega, Serrano-Rojas, and Whitworth, 2017, Amph. Manu Learning Cent.: 220).

Distribution

South of Río Marañon and Río Amazonas rivers in Amazonian Brazil (Acre, western Amazonas, Pará, Rondônia, and northern Mato Grosso), southeastern Peru, and Amazonian Bolivia; possibly to the Guianas (see comment)

Geographic Occurrence

Natural Resident: Bolivia, Brazil, Peru

Comment

Resurrected from the synonymy of Physalaemus petersi by Cannatella, Hillis, Chippindale, Weigt, Rand, and Ryan, 1998, Syst. Biol., 47: 311-335, on the basis of call and molecular evidence, where it had been placed by Cannatella and Duellman, 1984, Copeia, 1984: 911. Duellman, 2005, Cusco Amazonico: 275–278, provided, as Physalaemus petersi, an account (adult and larval morphology, description of the call, life history). Funk, Angulo, Caldwell, Ryan, and Cannatella, 2008, Herpetologica, 64: 290-304, discussed the distinction between Physalaemus petersi and Physalaemus freibergi, detailed their ranges and noted that populations from the Guianas had not yet been assigned to either species. Nascimento, Caramaschi, and Cruz, 2005, Arq. Mus. Nac., Rio de Janeiro, 63: 297-320, partitioned Physalaemus (sensu lato) into Physalameus, Eupemphix, and Engystomops, and listed the species of Engystomops. They did not note Engystomops freibergi, although it had been partitioned from its sibling species, Physalaemus petersi, some years before, implying that they did not accept the separation of the two species. However, based on the evidence suggested by Funk, Angulo, Caldwell, Ryan, and Cannatella, 2008, Herpetologica, 64: 290–304, most or all of the specimens examined by Nascimento et al., 2005, as Engystomops petersi are, in fact, representatives of Engystomops freibergi. França and Venâncio, 2010, Biotemas, 23: 71–84, provided a record for the municipality of Boca do Acre, Amazonas, with a brief discussion of the range. Bernarde, Machado, and Turci, 2011, Biota Neotrop., 11: 117–144, reported specimens from Reserva Extrativista Riozinho da Liberdade, Acre, Brazil. Ávila and Kawashita-Ribeiro, 2011, Check List, 7: 751, provided a record for Juara Municipality, northern Mato Grosso, Brazil, and briefly discussed the range. See brief account for the Manu region, Peru, by Villacampa-Ortega, Serrano-Rojas, and Whitworth, 2017, Amph. Manu Learning Cent.: 220–221.

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