Foodplants. Larva are polyphagous in the States
and eat Prunus domestica, Prunus SP., Syringa vulgaris, Salix, Populus,
and other trees. For a complete list look at Lepidoptera
of northern North America. I use
Alnus nigra,
and
Populus sp.
Larva. The fully grow larva is bluish green
covered by whitish powder on the dorsal surface (Baxter
1992).
Cocoon. Brown, spun up in twigs of the foodplant
close to the ground (Baxter 1992).