Fairly common resident.

Associated with Birch Betula spp., with adults in March and April and larvae mining in May. Adults can be swept from twigs and foliage of Birches.

A blotch mine starting from the leaf edge, with long strands of grass. Occupied mines are easily recognised by the distinctive grey larva, whilst the discarded grey larval skin may be visible in vacated mines.

Verification Grade Comment: Mine: Reared or larval morphology

	Determination by Genitalia Examination (gen. det.) Required

	Mine: Moth needs to be reared and, in some cases, possibly dissected.

Recorded in 46 (33%) of 140 10k Squares. First Recorded in 1887. Last Recorded in 2022. (Data up to end 2022) Additional Stats

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