Food Plant: Populus nigra (Black Poplar), P. x italica (Lombardy Poplar). P.trichocarpa (Black cottonwood)

Egg: Usually underside of the leaf

Mine: April-August

Pupa: Under a membrane on the margin of leaf

Notes: A 'snail-trail'-like mine on the upper surface, long and sinuous, without any visible frass. The mine can sometimes cover most of the leaf. Mine is shown on Populus trichocarpa

Data: 13.viii.2014, Upton Grey, Hants., VC12,

Image:© John Langmaid