Food Plant: Quercus (Oak)

Mine: July - August

Notes: The mine is greater than 16mm long, no creases in lower epidermis and a central green patch on upper side. A white silken cocoon is formed with frass heaped to one side outside this cocoon (as shown).

Data: 12.x.2017, Forest of Dean, Glos, VC34

Image:© Guy Meredith