This species can be distinguished from other Yponomeuta species by the terminal cilia on the forewing which are pure white as opposed to greyish.
The larvae feed gregariously from a silken web.
Calcareous soils where foodplant occurs.
Recorded in 63 (23.3%) of the 270 2km squares of Huntingdonshire.
Last recorded in July 2023
Recorded date range (Adult): 05 May to 27 September
Recorded date range (Larva/Leafmine): 26 April to 12 July