Phylogenetic relationships of the two largest species groups in the genus Amiota [the Amiota alboguttata group (29 known and six new species) and the Amiota basdeni group (17 known and three new species)] were reconstructed using two mitochondrial gene sequences (COI and ND2). The paraphyly of the A. alboguttata group was identified based on molecular evidence. The monophyletic A. basdeni group is found to be nested in the A. alboguttata group, rendering the latter paraphyletic. Automatic barcode gap discovery and Bayesian phylogenetics and phylogeography methods were used to assess species limits of the A. alboguttata and A. basdeni groups. The results indicate that most analysed species could be delimited clearly, including nine new species (Amiota beama sp. nov., Amiota cyclophylla sp. nov., Amiota flormontana sp. nov., Amiota obtusa sp. nov., Amiota planiceps sp. nov., Amiota scrobicula sp. nov., Amiota jianjuni sp. nov., Amiota tentacula sp. nov. and Amiota xinglaii sp. nov.), except for some closely related morphospecies. Furthermore, based on the highly biased distributions of these two groups, southwestern China is hypothesized to be a possible centre of origin and diversification for Amiota in East Asia.
Molecular phylogeny and species delimitation of Amiota alboguttata and Amiota basdeni species groups (Diptera: Drosophilidae) from East Asia
YA-LIAN Wang,Huiluo Cao,Hongwei Chen
Published 2020 in Zoological Journal of the Linnean Society
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2020
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Zoological Journal of the Linnean Society
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2020-01-28
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Biology
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