Food Plant: Populus tremula (Aspen)  

Egg: On leaf-stalk

Mine: July - November

Notes: Gall in petiole, later forms a mine in leaf-blade, in “green island". The larva is shown in ventral (top photo) and dorsal (bottom photo) view.

Data: 10.xi.2016, Clock Face Country Park, St Helens, South Lancs., VC59

Image:© Ben Smart