Platycheirus rosarum is a species of hoverfly found in the Holarctic realm.

The flight time is between May and October, though it peaks in abundance in June and July.

[5][6][7][8] Palearctic: Fennoscandia south to Iberia and the Mediterranean basin, Ireland eastward through Europe to European Russia and Siberia.

Nearctic: Alaska to Nova Scotia and south to New Jersey.

[9][10][11] Habitat: River, stream and pond margins with tall herbaceous vegetation and fen.