Butterfly with a second generation in August.
Late summer population seems to increase. The year 2021 was exceptual with 105 observations, starting in early july!
Feeds on Salix species (Pajuja), but also Populus tremula (Haapaa).
Overwinters as butterfly.
For more detailed informations on its occurrence in the area see
In spring, Suruvaippa are worn-out after autumn activity and harse conditions during wintertime.