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 56 (20.7%) of the 270 2km squares of Huntingdonshire.
Last recorded in September 2020
Recorded date range (Adult): 05 May to 27 September
Recorded date range (Larva/Leafmine): 11 May to 29 June