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