Tadpole of the Amazonia frog Edalorhina perezi (Anura: Leptodactylidae) with description of oral internal and chondrocranial morphology,Journal of Morphology

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Tadpole of the Amazonia frog Edalorhina perezi (Anura: Leptodactylidae) with description of oral internal and chondrocranial morphology
Journal of Morphology ( IF 1.5 ) Pub Date : 2020-10-20 , DOI: 10.1002/jmor.21286
Filipe A C do Nascimento _{1,

2} , Rafael O de Sá ₃ , Paulo C de A Garcia _{2,

4}

Affiliation

The genus Edalorhina consists of two species of small forest-floor frogs inhabiting the Amazon basin. The tadpole of Edalorhina perezi, the most widely distributed species, was previously described based on a single and early stage (Gosner 25) individual. Herein, we provide a description of the tadpole in Gosner stages 35-36 including internal morphology data (i.e., buccopharyngeal cavity and larval skeleton) based on samples from two populations from Ecuador. Edalorhina shares a generalized morphology with most members of its closely related taxa; however, it is distinguished from the other species by having an almost terminal oral disc. The presence of a dextral vent tube is considered a synapomorphy for the clade consisting of Edalorhina, Engystomops, and Physalaemus. Within this clade, the combination of two lingual papillae, a filiform median ridge, and the lack of buccal roof papillae are diagnostic of E. perezi and putative autapomorphies of Edalorhina. Chondrocranial anatomy provides characteristics, that is, presence of and uniquely shaped processus pseudopterygoideus and cartilago suprarostralis with corpora and alae joined by dorsal and ventral connections that readily differentiates the genus from other Leiuperinae.

中文翻译：

亚马逊青蛙 Edalorhina perezi (Anura: Leptodactylidae) 的蝌蚪与口腔内部和软骨颅骨形态的描述

Edalorhina 属由两种栖息在亚马逊盆地的小型林地蛙组成。Edalorhina perezi 的蝌蚪是分布最广的物种，之前根据单个早期阶段 (Gosner 25) 个体进行了描述。在此，我们提供了对 Gosner 阶段 35-36 中蝌蚪的描述，包括基于来自厄瓜多尔的两个种群的样本的内部形态数据（即，口咽腔和幼虫骨骼）。Edalorhina 与其密切相关的分类群的大多数成员共享一个广义的形态学；然而，它与其他物种的区别在于具有几乎末端的口腔盘。右旋排气管的存在被认为是由 Edalorhina、Engystomops 和 Physalaemus 组成的进化枝的突触。在这个进化枝中，两个舌乳头的组合，丝状正中脊和缺乏颊顶乳头是 E. perezi 和 Edalorhina 假定的自体形态的诊断。软骨颅骨解剖结构提供了特征，即存在形状独特的拟翼突和软骨，其体部和翼部通过背侧和腹侧连接相连，很容易将该属与其他 Leuperinae 区分开来。

更新日期：2020-10-20

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