Fairly common.

Mining the leaves of Quercus spp. or Castanea with larva feeding in June/July and September/October. In a long broad gallery with dispersed frass in the latter part of mine.

Verification Grade Comment: If on sweet chestnut otherwise needs breeding out and dissecting

Recorded in 53 (38%) of 140 10k Squares. First Recorded in 1982. Last Recorded in 2022. (Data up to end 2022) Additional Stats

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