title: Phylogenetic relationship among East Asian species of the Stegana genus group (Diptera, Drosophilidae).
abstract: The phylogenetic relationship among 27 East Asian species of the Stegana genus group was reconstructed using DNA sequences of mitochondrial (COI and ND2) and nuclear (28S) genes. The results lent support to the current generic/subgeneric taxonomic classification in the genus group with the exceptions of the paraphyly of the genus Parastegana and the subgenus Oxyphortica in the genus Stegana. The ancestral areas and divergence times in the genus group were reconstructed/estimated, and accordingly, the biogeographical history of this important clade was discussed. It was proposed that, the evolution of the plant family Fagaceae, especially Quercus, may have played a certain role in facilitating the diversification of the Stegana genus group.
authors.affiliation: Department of Entomology, South China Agricultural University, Guangzhou 510642, China.
authors.forename: Tong
authors.initials: T
authors.lastname: Li
authors.forename: Jian-jun
authors.initials: JJ
authors.lastname: Gao
authors.forename: Jin-ming
authors.initials: JM
authors.lastname: Lu
authors.forename: Xing-lai
authors.initials: XL
authors.lastname: Ji
authors.forename: Hong-wei
authors.initials: HW
authors.lastname: Chen
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D002467:Cell Nucleus / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D018428:Drosophilidae / Q000145:classification* / Q000235:genetics; D019143:Evolution, Molecular; D005202:Asia, Eastern; D017344:Genes, Insect; D005843:Geography; D008957:Models, Genetic; D010802:Phylogeny; D017422:Sequence Analysis, DNA
chemical_list: D004272:DNA, Mitochondrial