Abstract
The genus Microhyla Tschudi, 1838 includes 52 species and is one of the most diverse genera of the family Microhylidae, being the most species-rich taxon of the Asian subfamily Microhylinae. The recent, rapid description of numerous new species of Microhyla with complex phylogenetic relationships has made the taxonomy of the group especially challenging. Several recent phylogenetic studies suggested paraphyly of Microhyla with respect to Glyphoglossus Günther, 1869, and revealed three major phylogenetic lineages of mid-Eocene origin within this assemblage. However, comprehensive works assessing morphological variation among and within these lineages are absent. In the present study we investigate the generic taxonomy of Microhyla–Glyphoglossus assemblage based on a new phylogeny including 57 species, comparative morphological analysis of skeletons from cleared-and-stained specimens for 23 species, and detailed descriptions of generalized osteology based on volume-rendered micro-CT scans for five species–altogether representing all major lineages within the group. The results confirm three highly divergent and well-supported clades that correspond with external and osteological morphological characteristics, as well as respective geographic distribution. Accordingly, acknowledging ancient divergence between these lineages and their significant morphological differentiation, we propose to consider these three lineages as distinct genera: Microhylasensu stricto, Glyphoglossus, and a newly described genus, Nanohylagen. nov.
Subject
Ecology, Evolution, Behavior and Systematics
Reference177 articles.
1. Size dependence during the development of the amphibian foot: colchicine-induced digital loss and reduction.;Alberch;Journal of Embryology and Experimental Morphology,1983
2. A DEVELOPMENTAL ANALYSIS OF AN EVOLUTIONARY TREND: DIGITAL REDUCTION IN AMPHIBIANS
3. Biophysical problems of small size in vertebrates.;Alexander;Symposia of the Zoological Society of London,1996
4. Guilds of anuran larvae: relationships among developmental modes, morphologies, and habitats.;Altig;Herpetological Monographs,1989
5. Guilds of Anuran Larvae: Relationships among Developmental Modes, Morphologies, and Habitats
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