Polychaeta (fly)

{{short description|Genus of flies}}

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| taxon = Polychaeta (fly)

| authority = Macquart, 1851{{cite journal |last = Macquart|first = P. J. M. |date = 1851 |title = Dipteres exotiques nouveaux ou peu connus. Suite du 4e supplement publie dans les memoires de 1849 |journal = Mémoires de la Société (Royale) des sciences, de l'agriculture et des arts à Lille |volume = 1850 |pages = 134–294 |url = https://www.biodiversitylibrary.org/item/107754#page/156/mode/1up| access-date = 28 March 2021}}

| type_species = Polychaeta nigra

| type_species_authority = Macquart, 1851

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Polychaeta 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=22 November 2023 |date=5 March 2020}}