Norfolk status Widespread and common. At least two generations and in favourable years three. Can overwinter as an adult and reappear in the spring.
Characteristic dark oval patch on the forewing.
Leaf-mine: May; July; September-October. A long, whitish smoothly-curved upper-surface mine with broken black frass. Pupates in a silken cocoon suspended from threads attached to food plant.
Recorded in 64 (86%) of 74 10k Squares. First Recorded in 1874. Last Recorded in 2024. Additional Stats
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 Dersingham, Nov 2010, D Jones Det. J Clifton.jpg)
