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Cryptic diversity in the subgenus Oxyphortica (Diptera, Drosophilidae, Stegana).

ABSTRACT: Phylogenetic relationships of the subgenus Oxyphortica were reconstructed based on two mitochondrial genes (COI and ND2). The results revealed the paraphyly of Oxyphortica and supported high levels of cryptic diversity within this subgenus. By integrating morphological characteristics and molecular evidence, we identified 17 new species as members of Oxyphortica: S. (O.) amphigya sp. nov., S. (O.) armillata sp. nov., S. (O.) ashima sp. nov., S. (O.) bawo sp. nov., S. (O.) crypta sp. nov., S. (O.) gelea sp. nov., S. (O.) hengduanmontana sp. nov., S. (O.) jinmingi sp. nov., S. (O.) mengbalanaxi sp. nov., S. (O.) mouig sp. nov., S. (O.) setipes sp. nov., S. (O.) shangrila sp. nov., S. (O.) tsauri sp. nov., S. (O.) valleculata sp. nov., S. (O.) wanhei sp. nov., S. (O.) yangjin sp. nov. and S. (O.) hypophaia sp. nov. To test the early morphological identifications and confirm the species boundaries, different species delimitation methods, including Automatic Barcode Gap Discovery (ABGD) and Bayesian Phylogenetics and Phylogeography (BP&P), were used, together with traditional distance. All species boundaries were clearly defined. As Oxyphortica species are mainly distributed across Southwest China (e.g., 20 spp. from the Hengduan Mountains), the complex climate and topographic landforms of the area may be responsible for the high levels of species diversity and endemism.

SUBMITTER: Wang YL 

PROVIDER: S-EPMC8559608 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Cryptic diversity in the subgenus <i>Oxyphortica</i> (Diptera, Drosophilidae, <i>Stegana</i>).

Wang Ya-Lian YL   Wang Nan-Nan NN   Zhang Yuan Y   Tsaur Shun-Chern SC   Chen Hong-Wei HW  

PeerJ 20211029

Phylogenetic relationships of the subgenus <i>Oxyphortica</i> were reconstructed based on two mitochondrial genes (<i>COI</i> and <i>ND2</i>). The results revealed the paraphyly of <i>Oxyphortica</i> and supported high levels of cryptic diversity within this subgenus. By integrating morphological characteristics and molecular evidence, we identified 17 new species as members of <i>Oxyphortica</i>: <i>S</i>. (<i>O</i>.) <i>amphigya</i> <b>sp. nov.</b>, <i>S</i>. (<i>O</i>.) <i>armillata</i> <b>sp  ...[more]

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