Local.

Betula spp. In small regenerating or coppiced birches.

Flies in May/June with larva feeding in July in a narrow gallery mine leading to a blotch. The larva then excises part of the blotch to form a case, falling to the ground and overwintering and pupating in this case without any further feeding.

Verification Grade Comment: Confusion possible with beetle mine

	Mine: Either the leaf or a good photograph required

Recorded in 56 (40%) of 140 10k Squares. First Recorded in 1887. Last Recorded in 2022. (Data up to end 2022) Additional Stats

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