The <i>Stegana</i> (<i>sensu stricto</i>) species from China, with morphological and molecular evidence (Diptera: Drosophilidae)
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Four new species of the subgenus <i>Stegana</i> (<i>sensu stricto</i>) were found and described from China: <i>S</i>. (<i>S.</i>) <i>antha</i> sp. nov., <i>S</i>. (<i>S.</i>) <i>latiorificia</i> sp. nov., <i>S</i>. (<i>S.</i>) <i>huangjiai</i> sp. nov. and <i>S</i>. (<i>S.</i>) <i>nigrifoliacea</i> sp. nov. Three known <i>Stegana</i> (s. str.) species from China: <i>S</i>. (<i>S</i>.) <i>antlia</i> Okada, 1991, <i>S.</i> (<i>S</i>.) <i>cheni</i> Sidorenko, 1997 and <i>S.</i> (<i>S</i>.) <i>emeiensis</i> Sidorenko, 1997 are redescribed as supplementary information. A key to the species, based on morphological characters, is provided. The phylogenetic relationships among 14 species of the subgenus <i>Stegana</i> are reconstructed with the combined sequences of the mitochondrial genes, <i>ND2</i> (NADH dehydrogenase subunit 2) and <i>COI</i> (cytochrome <i>c</i> oxidase, subunit I). Moreover, the intra- and interspecific pairwise K-2P (Kimura's two-parameter) distances among these species are summarized, and the availability of mitochondrial markers in the species identification of the subgenus <i>Stegana</i> are further discussed. http://www.zoobank.org/urn:lsid:zoobank.org:pub:368C55C3-B101-457C-BD61-BDD8F1B780E5
本研究记述并报道了产自中国的斑翅果蝇亚属（Stegana，狭义sensu stricto）的4个新种：<i>S.</i> (<i>S.</i>) <i>antha</i> 新种、<i>S.</i> (<i>S.</i>) <i>latiorificia</i> 新种、<i>S.</i> (<i>S.</i>) <i>huangjiai</i> 新种及<i>S.</i> (<i>S.</i>) <i>nigrifoliacea</i> 新种。同时，将3种中国已知的狭义斑翅果蝇亚属（Stegana）物种作为补充资料予以重新记述：分别为Okada于1991年发表的<i>S.</i> (<i>S.</i>) <i>antlia</i>、Sidorenko于1997年发表的<i>S.</i> (<i>S.</i>) <i>cheni</i>，以及Sidorenko于1997年发表的<i>S.</i> (<i>S.</i>) <i>emeiensis</i>。本研究基于形态特征构建了该亚属的物种检索表。通过联合线粒体基因<i>ND2</i>（烟酰胺腺嘌呤二核苷酸脱氢酶亚基2，NADH dehydrogenase subunit 2）与<i>COI</i>（细胞色素<i>c</i>氧化酶亚基I，cytochrome c oxidase, subunit I）的序列数据，重建了斑翅果蝇亚属14个物种的系统发育关系。此外，本研究汇总了上述物种的种内及种间两两K-2P（Kimura双参数模型，Kimura's two-parameter）遗传距离，并进一步探讨了线粒体分子标记在斑翅果蝇亚属物种鉴定中的应用可行性。相关注册信息详见：http://www.zoobank.org/urn:lsid:zoobank.org:pub:368C55C3-B101-457C-BD61-BDD8F1B780E5
