| Summary: | In this study, the complete mitochondrial genomes (mitogenomes) of two hoverfly species of <i>Korinchia angustiabdomena</i> (Huo, Ren, and Zheng) and <i>Volucella nigricans</i> Coquillett (Diptera: Syrphidae) were determined and analyzed. The circular mitogenomes were 16,473 bp in <i>K. angustiabdomena</i> (GenBank No. MK870078) and 15,724 bp in <i>V. nigricans</i> (GenBank No. MK870079). Two newly sequenced mitogenomes both contained 37 genes, and the gene order was similar with other syrphine species. All the protein-coding genes (PCGs) were started with the standard ATN codons; and most of PCGs were terminated with a TAA stop codon, while <i>ND1</i> in <i>K. angustiabdomena</i> ended with a TAG codon, and <i>ND5</i> terminated with truncated T stop codons in both species. The phylogenetic relationship between <i>K. angustiabdomena</i> and <i>V. nigricans</i> with related lineages was reconstructed using Bayesian inference and Maximum-likelihood analyses. The monophyly of each family considered within Muscomorpha was confirmed by the clades in the phylogenetic tree, and superfamily of the Oestroidea (Calliphoridae, Sarcophagidae, and Oestridae) was unexpectedly found to be a paraphyletic group based on our selected data. This mitogenome information for <i>K. angustiabdomena</i> and <i>V. nigricans</i> could facilitate future studies of evolutionarily related insects.
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