Woolly apple aphid
trees but the sticky masses of “wool” may contaminate leaves and fruits and can be a nuisance at harvest time. Life cycle and appearance of Woolly apple [...] cracks and under loose bark. The nymphs become active in late March or April (in the northern hemisphere) and around the end of May, large colonies covered [...] General The woolly aphid, Eriosoma lanigerum , is a serious worldwide apple pest. It is probably of North American origin and has been distributed to other