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The tadpole of Scinax catharinae (Anura: Hylidae) with description of the internal oral morphology, and a review of the tadpoles from the Scinax catharinae group

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We present a description of the external morphology and internal oral features of the tadpole of Scinax catharinae and comparisons with the known tadpoles of the S. catharinae group. Two characters of the external morphology present some intraspecific variation: the row of submarginal papillae, which can be uniseriate or absent, and the tail tip, which can be large or small, truncated or not. That said, the tadpole of S. catharinae presents some distinguishing features that differentiate it from other tadpoles in the S. catharinae group: i) the marginal row of papillae with alternate disposition, ii) the spiracle opening on the midline of the body, iii) longest snout length, and iv) largest interorbital distance. The studied species were segregated into five ecomorphological guilds, characterized by external morphological features, tadpole habitat use and vegetation formation of species range. The taxonomy of the S. catharinae group is complex, due to the morphological similarities among the adults. Larval characters could help in the resolution of the taxonomic and phylogenetic complexities, since the morphological differences among the tadpoles in this group seem more conspicuous than those found among the adults.

Affiliations: 1: Programa de Pós-graduação em Biologia Animal, UNESP, 15054-000, São José do Rio Preto, São Paulo, Brasil; Laboratório de Ecologia Animal, Departamento de Zoologia e Botânica, UNESP, 15054-000, São José do Rio Preto, São Paulo, Brasil; 2: Laboratório de Ecologia Animal, Departamento de Zoologia e Botânica, UNESP, 15054-000, São José do Rio Preto, São Paulo, Brasil; Programa de Pós-graduação em Zoologia, UNESP, 15506-900, Rio Claro, São Paulo, Brasil; 3: Laboratório de Ecologia Animal, Departamento de Zoologia e Botânica, UNESP, 15054-000, São José do Rio Preto, São Paulo, Brasil; 4: Departamento de Zoologia, UNESP, Caixa Postal 199, 13506-900, Rio Claro, São Paulo, Brasil

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/content/journals/10.1163/156853807780202387
2007-04-01
2016-12-03

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