Rare resident in ancient woodland.

Corylus avellana and Betula spp. with larva mining leaves from August to October in a squat, brown, pistol-shaped case made from leaf fragments.

	Determination by Genitalia Examination (gen. det.) Required

	Case: A good quality photo or specimen of the case and plant/pabulum is required.

Recorded in 7 (5%) of 140 10k Squares. First Recorded in 1887. Last Recorded in 2018. (Data up to end 2023) Additional Stats

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