The larvae initially produce a squarish or triangular blotch and then go on to create two or three successive folds.
Hedgerows, woodland and scrub.
Recorded in 154 (57%) of the 270 2km squares of Huntingdonshire.
Last recorded in November 2021
Recorded date range (Adult): 26 April to 17 October
Recorded date range (Larva/Leafmine): 10 June to 28 November