Phylogeny and species differentiation of Mollitrichosiphum spp. (Aphididae, Greenideinae) based on mitochondrial COI and Cyt b genes

Abstract

Phylogenetic analyses based on mitochondrial genes were conducted to reconstruct species relationships within the aphid genus Mollitrichosiphum (Aphididae, Greenideinae). MP and Bayesian analysis results using COI and Cyt b datasets, and combined MP, ML and Bayesian analysis of both were consistent with a morphologically supported monophyly. Subdivision of the genus into two subgenera was strongly supported. Samples of each included species form monophyletic clade, respectively; and the result implied the valid status of related species in this genus. These results suggest some surprising hypotheses regarding the phylogeography of the genus: the uplift of the Tibetan Plateau, reorganization of major river catchments and the isolation of Hainan Island were probably important factors contributing to the diversification of species in this genus. © 2011 Current Zoology.