Fairly common resident.
Most easily recorded from mines on Quercus spp. with larva feeding in June/July and September/October. In a gallery mine completely filled with green frass, becoming brown in old mines. Ovum on upperside of leaf. Recorded in 36 (26%) of 140 10k Squares. First Recorded in 1887. Last Recorded in 2022. (Data up to end 2022) |