Abstract: In this study, partial DNA sequences of two mitochondrial genes, cytochrome b (Cytb) and cytochrome c oxidase subunit Ⅰ (COⅠ) genes, were  used to infer the phylogenetic relationships among 15 sarcophagid fly species, representing the six subgenera of the genus Sarcophaga in the catalogue of the Sarcophagidae of the world. The concatenated sequences (972 bp) were employed to carry out the phylogenetic analyses, including MP, ML, and Bayesian analyses. Our results suggested monophyly of three subgenera, i.e., the subgenus Parasarcophaga, the subgenus Boettcherisca, and the subgenus Liopygia. Our analyses also showed that the subgenus Liosarcophaga and the subgenus Pandelleisca were not monophyletic. This study showed no resolution for the phylogenetic positions of S. (Pandelleisca) similis and S. (Robineauella) coe. Furthermore, the MP analysis and the likelihood function analyses revealed incongruent phylogenetic relationship between the scopariiformisiwuensis clade and the polystylata hui clade. Therefore, other molecular markers and more taxon samplings were needed in the future study.

Key words: Bayesian analysis, phylogeny, cytochrome b (Cytb) gene, cytochrome oxidase subunitⅠ (COⅠ) gene