Eur. J. Entomol. 108 (1): 139-152, 2011 | DOI: 10.14411/eje.2011.017

The Stegana undulata species group (Diptera: Drosophilidae) from the Oriental Region, with molecular phylogenetic analysis of the Chinese species

Jin-Ming LU1, Jian-Jun GAO*,2, Xi-Peng CHEN1, Hong-Wei CHEN*,1
1 Department of Entomology, South China Agricultural University, Guangzhou 510642, China
2 Laboratory for Conservation and Utilization of Bio-resources, Yunnan University, Kunming, Yunnan 650091, China

The Stegana undulata species group is revised and eight new species described: S. (Steganina) flaviclypeata Chen & Chen, sp. n., S. (S.) flavipalpata Chen & Chen, sp. n., S. (S.) leucothorax Chen & Chen, sp. n., S. (S.) melanocheilota Chen & Chen, sp. n. and S. (S.) melanothorax Chen & Chen, sp. n. from southern China, and S. (S.) flaviscutellata Chen & Chen, sp. n., S. (S.) nigriclypeata Chen & Chen, sp. n. and S. (S.) nigripalpata Chen & Chen, sp. n. from eastern Malaysia. A key to all the species examined based on morphological data is provided. Based on DNA sequence data of the mitochondrial ND2 and COI genes, the relationship among six Chinese species of the undulata group and that of the S. coleoptrata and S. nigrolimbata species groups of the same subgenus is investigated, using S. emeiensis of the subgenus Stegana s. str. as an out-group.

Keywords: Drosophilidae, systematics, molecular phylogeny, mitochondrial DNA, Oriental Region, Stegana undulata group, Steganina

Received: July 9, 2010; Accepted: August 16, 2010; Published: January 3, 2011

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