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Type: Article
Published: 2021-08-26
Page range: 375-404
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A new species of nurse-frog (Aromobatidae, Allobates) from the Amazonian forest of Loreto, Peru

Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, Prédio 40, sala 110, 90619-900, Porto Alegre, RS, Brazil. Peruvian Center for Biodiversity and Conservation - PCB&C. Nanay 373, Iquitos, Peru. Universidad Nacional de la Amazonia Peruana, Facultad de Ciencias Biológicas, Departamento Académico de Ecología y Fauna. Local SL11, Almendras, vía Huayruro, Zungarococha, Loreto, Peru. Instituto de Investigaciones de la Amazonia Peruana, Dirección de Investigación en Diversidad Biológica Terrestre Amazónica, Av. Abelardo Quiñonez km 2.5, San Juan, Loreto, Peru.
Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, Prédio 40, sala 110, 90619-900, Porto Alegre, RS, Brazil. Department of Herpetology, American Museum of Natural History, Central Park West & 79th St., New York, NY 10024, USA.
Museo de Historia Natural La Salle (MHNLS), Fundación La Salle de Ciencias Naturales, Caracas 1050, Venezuela.
Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, Prédio 40, sala 110, 90619-900, Porto Alegre, RS, Brazil.
Peruvian Center for Biodiversity and Conservation - PCB&C. Nanay 373, Iquitos, Peru.
Departamento de Zoologia, Universidade Federal de Pernambuco, Av. Professor Moraes Rego, S/N, Cidade Universitária, 50760-420, Recife, PE, Brazil.
Amphibia Advertisement calls Amazonia Allobates trilineatus Allobatinae external morphology mtDNA systematics


We describe a new species of nurse-frog (Aromobatidae, Allobates) from the Amazonian forest of Loreto, Peru using morphological, acoustic and genetic data. Our phylogenetic analysis placed Allobates sieggreenae sp. nov. as the sister species of A. trilineatus, the most similar-looking species and with which it was previously confused. However, the new species has a brown dorsum, solid dark brown lateral dark stripe not fading towards groin, adult males with few and sparse melanophores over a cream background on chin, chest, and belly, dark transverse bars absent on thighs, and an advertisement call formed by a trill of single notes (in A. trilineatus dorsum dark brown, blackish brown lateral dark stripe, paler from mid-body to groin, adult males with a dark background color on chin, chest, and belly due to a dense layer of melanophores, dark transverse bar present on dorsal surface of thighs, and trills of paired notes). Allobates sieggreenae is known from two localities of Amazonian white-sand forest ecosystems east of the Ucayali River.



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