The pronounced emargination of the costa of the forewing of this species is characteristic although variable in depth. There are several forms with variable colouration. The species has recently been split into 1062 Acleris emargana and 1062a Acleris effractana.

Recorded in 30 (11.1%) of the 270 2km squares of Huntingdonshire.

Last recorded in July 2019

Recorded date range (Adult): 25 July to 25 November