On Acer pseudoplatanus with July larva feeding in the seeds and the autumn larvae most probably overwintering in a flower-bud or leaf-bud as E. sericopeza and E. louisella. Adult moths often rest on trunk and come to light.
Recorded in 21 (15%) of 140 10k Squares. First Recorded in 1950. Last Recorded in 2020. (Data up to end 2020) Additional Stats
Two generations, May / June and July to early September