Populus balsamifera
The larvae mostly feed on "Salix" species, including "Salix alba", "Salix amygdaloides", "Salix babylonica", "Salix bebbiana", "Salix bonplandiana", "Salix caroliniana", "Salix eriocephala", "Salix lasiolepis", Salix "longifolia", "Salix lutea", "Salix monticola", "Salix purpurea", "Salix x rubens" ("Salix alba" x "Salix fragilis"), "Salix scouleriana" and "Salix sericea", but may also feed on "Populus" species, including "Populus balsamifera" and "Populus tremuloides". They mine the leaves of their host plant.