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
