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Larval anatomy of monotypic painted ant nest frogs Lithodytes lineatus reveals putative homoplasies with the Leptodactylus pentadactylus group (Anura: Leptodactylidae)
Zoologischer Anzeiger ( IF 1.4 ) Pub Date : 2020-12-23 , DOI: 10.1016/j.jcz.2020.12.003
Filipe A.C. do Nascimento , Rafael O. de Sá , Paulo C. de A. Garcia

The morphological diversity of anuran larvae made them an important source of information for evolutionary and systematic studies. For the monotypic frog genus Lithodytes, which has an interesting taxonomic history, including its past synonymizing with Adenomera and its placement as a subgenus of Leptodactylus, the information provided from its larvae can help to understand its systematics interrelationships and also provide insights about its evolutionary trajectories. Herein, we provide a detailed description of the larval morphology of Lithodytes lineatus, including novel data of internal morphology (buccopharyngeal cavity and skeleton), and discuss some morphological and evolutionary aspects in relation to other members of the subfamily Leptodactylinae. Despite the overall similar larval morphology with others members of the subfamily, we identified four autapomorphic traits for Lithodytes and seven purported homoplastic traits with a subclade of the Leptodactylus pentadactylus species group that likely evolved convergently. Some of these traits have been previously associated with a carnivorous diet. Putative homoplastic and autapomorphic characters served as additional diagnostic traits for Lithodytes, supporting its recognition as a distinct genus within Leptodactylidae.



中文翻译:

单型画蚂蚁巢蛙Lithodytes lineatus的幼虫解剖揭示了Leptodactylus pentadactylus组的假定同质性(Anura:Leptodactylidae)

紫ur幼虫的形态多样性使其成为进化和系统研究的重要信息来源。对于具有有趣分类学历史(包括其过去与Adenomera的代名词以及其作为Leptodactylus的子属)的单一类蛙属Lithodytes而言,其幼虫提供的信息可以帮助理解其系统的相互关系,并提供有关其进化轨迹的见解。 。在这里,我们详细介绍了石楠的幼虫形态。,包括内部形态学(颊咽腔和骨骼)的新数据,并讨论了与Leptodactylinae亚科其他成员有关的一些形态学和进化方面。尽管总体上与该亚科其他成员的幼虫形态相似,但我们发现了锂藻类的四个亚同型性状和七个据称的同形特征的五趾L亚种亚群,它们可能会聚在一起进化。这些特征中的一些以前曾与肉食有关。推定的同型和类亚种性状作为岩藻类的附加诊断特征支持其被识别为Leptodactylidae科中的一个独特属。

更新日期:2021-01-07
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