Food Plant: Quercus petrea (Sessile Oak),Q.robur (Pendunculate Oak), Q.palustris (Pin Oak), Castanea sativa (Sweet Chestnut) Elsewhere: Q.aliena (Galcham Oak), Q.cerris (Turkey Oak), Q.dalechampii (Dalechamps Oak), Q.ithaburensis subsp. macrolepis (Mount Tabor Oak), Q.pubescens (Downy Oak) , Q. rubra (Red Oak)

Mine: Univoltine: summer

Pupa: Outside the mine

Notes: A large, whitish, upper surface blotch. The photo above shows the characteristic early twisted gallery. Often pyriform. Widespread. As the mine ages it can appear as a large brown blotch (as shown). This appears to be a first record of this species on Q.palustris (Pin Oak) in the UK

Data: 29.vii.2022, Guildford, Surrey, VC17

Image:© Martin Townsend