is mostly a temperate aphid species and extensively co-distributed with cultivated apple.
Common names. Woolly apple aphid, American blight.
Distribution. This aphid is globally distributed mostly in temperate regions of the world.
Host associations. It has a narrow host range, feeding almost entirely on rosaceous plants.
Economic importance. It is particularly important on apple and pear, but also attacks Hawthorn, Cotoneaster, and Carya (Juglandaceae). It is also known to induce leaf rosette galls on Ulmus in North America. It has not been implicated in the transmission of any plant virus.