Woolly apple aphid
sheltering in 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 [...] 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 [...] apple aphid In contrast to other aphids , the life cycle and survival from year to year of the woolly aphid depends entirely on wingless, parthenogenetic