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Issue: Vol. 5249 No. 3: 2 Mar. 2023
Type: Article
Published: 2023-03-02
DOI: 10.11646/zootaxa.5249.3.1
Page range: 301-334
Abstract views: 589
PDF downloaded: 53

An elusive giant: A new species of Vitreorana Guayasamin et al., 2009 (Anura: Centrolenidae) from the northern Atlantic Forest with an osteological description and comments on integumentary spicules

Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, CEP 90619-900, Porto Alegre, Rio Grande do Sul, Brasil.
Laboratório de Sistemática de Vertebrados, Pontifícia Universidade Católica do Rio Grande do Sul, Av. Ipiranga 6681, CEP 90619-900, Porto Alegre, Rio Grande do Sul, Brasil. Laboratório de Herpetologia Tropical, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16, CEP 45662-900 Ilhéus, Bahia, Brasil.
Laboratório de Herpetologia Tropical, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16, CEP 45662-900 Ilhéus, Bahia, Brasil.
Laboratório de Herpetologia Tropical, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16, CEP 45662-900 Ilhéus, Bahia, Brasil. Herpetology Section, Zoologisches Forschungsmuseum Alexander Koenig, Adenauerallee 160, 53113 Bonn, Germany.
Laboratório de Herpetologia Tropical, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16, CEP 45662-900 Ilhéus, Bahia, Brasil.
Departamento de Zoología, Universidad de Sevilla, Av. Reina Mercedes, 41012, Sevilla, España. Department of Herpetology, American Museum of Natural History, Central Park West & 79th St., New York, NY 10024, USA.
Brazil Centroleninae glassfrogs morphology osteology taxonomy Amphibia

Abstract

We describe a new species of Vitreorana from the Atlantic Forest of southern Bahia state, in north-eastern Brazil. Vitreorana assuh sp. nov. is by far the largest species of the genus (snout-to-vent length [SVL] = 30.9 mm and 34.1 mm in one male and female, respectively; maximum SVL recorded for all other species = 28.0 mm). The new species is morphologically most similar to V. franciscana, from the Cerrado biome in Brazil. Besides its large size, the new species has, among other diagnostic characters, the presence of vomerine teeth and the occurrence of enameled iridophores in the pericardium, hepatic and urinary bladder peritonea. Furthermore, we describe and compare the complete mineralized skeleton of the new species and V. uranoscopa, and describe and discuss the variation of integumentary spicules in all species of the genus and their relevance to Vitreorana systematics.

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