Mystacomyia

{{Short description|Genus of flies}}

{{Automatic taxobox

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| taxon = Mystacomyia

| authority = Giglio-Tos, 1893{{cite journal |last1=Giglio-Tos |first1=E. |title=Diagnosi di nuovi generi e di nuove specie di Ditteri. IX, no 158 |journal=Bollettino dei musei di zoologia ed anatomia comparata della R. Università di Torino |date=1893 |volume=14 |issue=8 |pages=1–14 |url=https://www.biodiversitylibrary.org/item/42761#page/209/mode/1up |access-date=8 March 2021}}

| type_species = Mystacella rubriventris

| type_species_authority = Wulp, 1890{{cite book |last1=Wulp |first1=F.M. van der |title=Fam. Muscidae. Pp. 41–56. [Cont.] In: Godman, F.D. and Salvin, O., eds., Biologia Centrali-Americana, or, contributions to the knowledge of the fauna and flora of Mexico and Central America. Zoologia. Class Insecta. Order Diptera. Vol. II. [1888–1903.] |date=1890 |publisher=Taylor & Francis |location=London |pages=489 pp + 13 pls}}

| synonyms = *Milonius Reinhard, 1955{{cite journal |last1=Reinhard |first1=H.J. |title=New genera and species of North American Tachinidae (Diptera) |journal=Journal of the Kansas Entomological Society |date=1955 |volume=28 |pages=123–130}}

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Mystacomyia is a genus of flies in the family Tachinidae.{{cite web |last1=O’Hara |first1=James E. |last2=Henderson |first2=Shannon J. |first3=D. Monty |last3=Wood |title=Preliminary Checklist of the Tachinidae (Diptera) of the World|url=http://www.nadsdiptera.org/Tach/WorldTachs/Checklist/Tachchlist_ver2.1.pdf |website=Tachinidae Resources |access-date=30 November 2023 |date=5 March 2020}}