Local on downland and dry grassland throughout much of southern England and Wales, north to Lancashire. In Hampshire evidently uncommon, and absent from much of the south-west, with no recent records from the Isle of Wight. Wingspan 11-15 mm. A useful field mark is the vertical line from dorsum to upper margin of cell (MBGBI Vol 4 part 1). Larva mines leaves of Wild Carrot, Rough Chervil, Cow Parsley and Upright Hedge-parsley, subsequently living within a spun leaf.