Larvae feed on "Populus tremula". Populin, which occurs in the leaves and bark of "Populus tremula", is benzoyl salicin. The larvae feed on "Populus tremula". The larvae feed on the leaves of "Populus" species, especially "Populus tremula". The larvae feed on the young shoots and leaves of "Populus tremula". It is a quaking aspen ("Populus tremula"). Host plants include willow and poplar, especially the aspen, "Populus tremula". The main species of trees&colon; Pinus sylvestris, Betula, Populus tremula and other broad-leaved trees. The larvae feed on willow and poplar, mainly "Populus tremula". The larvae feed on "Vaccinium", "Salix" and "Populus" species (mainly "Populus tremula"). European aspen ("Populus tremula") and rarely European beech ("Fagus sylvatica"). Aspen ("Populus tremula"), Goat Willow ("Salix caprea"), and Grey Alder ("Alnus incana").