Phylogenetic relationships among genera of Aphidiinae (Hymenoptera: Braconidae) based on DNA sequence of the mitochondrial 16S rRNA gene

Phylogenetic relationships among forty-nine taxa representing twenty-four genera of Aphidiinae (Hymenoptera: Braconidae) were investigated using DNA sequence of a portion of the mitochondrial 16S rRNA gene and parsimony analysis. Seven species in six other subfamilies of Braconidae were used as outgroup. The results suggested that members of Aphidiinae are monophyletic. The basal lineage of Aphidiinae was Aclitus in weighted and unweighted parsimony analyses and Praini was basal relative to Ephedrini. With the exception of Pauesia and Aphidius, all genera were monophyletic. The results support generic status for Euaphidius, but not for Lysaphidus. Diaeretus leucopterus was internal to a clade composed of three Pauesia species, suggesting that the latter genus may be paraphyletic. A combined analysis that included DNA sequence of 16S rRNA, NADH1 dehydrogenase and 285 rRNA resulted in more robust cladograms with topologies similar to those inferred from the 16S rRNA gene sequence alone. The results are compared to previously proposed phylogenies of Aphidiinae based on morphological and molecular characters.