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.

Data: 04.ix.1985, Felmersham NR, Beds, VC30

Image:© David Manning