Food Plant: Populus tremula (Aspen)  

Egg: On leaf-stalk

Mine: July - November

Notes: Gall in petiole (as shown), later mine in leaf-blade, in “green island". The larva is shown (top left).

Data: 13.xi.2014, M.O.D. training area, Yardley Chase, Northants., VC32

Image:© David Manning