4.5 Article

Integrative taxonomy of the Iphisa elegans & nbsp;Gray, 1851 species complex (Squamata: Gymnophthalmidae) leads to the description of five new species

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Publisher

OXFORD UNIV PRESS
DOI: 10.1093/zoolinnean/zlad073

Keywords

Amazonia; biogeography; c-mos; cytb; delimitation; hemipenis; microteiid lizard; morphology; phylogeny; species complex

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In this study, the taxonomic status of lizards of the Iphisa elegans complex were reevaluated based on mitochondrial and nuclear DNA analysis, as well as morphological characteristics. The results revealed the presence of nine operational taxonomic units within the genus Iphisa and these units could be distinguished by external and hemipenial morphology. A new taxonomic rearrangement of the genus was proposed, including the elevation of Iphisa elegans soinii to the specific level, and the naming and description of five new species.
We reassessed the taxonomic status of lizards of the Iphisa elegans complex, a monotypic genus of Gymnophthalmidae, based on the congruence between mitochondrial DNA (Cytb) and nuclear DNA (c-mos and prlr) and characters of internal and external morphology, both quantitative and qualitative (meristic, morphometric and hemipenial), throughout its wide Amazonian distribution. The congruence of three species delimitation analyses (mPTP, bGMYC and ASAP), nuclear DNA topology and morphological evidence resulted in nine operational taxonomic units in the genus Iphisa. Besides being recovered as monophyletic groups in mitochondrial and nuclear phylogenetic trees, these nine operational taxonomic units can be distinguished by external and hemipenial morphology. Finally, we propose a new taxonomic rearrangement of the genus, whereby we: (i) restrict I. elegans to north-east Amazonia in the Guiana Shield and southwards, west from the Purus-Madeira interfluvium, on the right bank of the Amazon River; (ii) elevate Iphisa elegans soinii Dixon, 1974 to the specific level Iphisa soinii Dixon, 1974 comb. nov.; and (iii) name and describe five new species.

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