Woolly Aphid

Typically found on the bark, twigs, and leaves of host trees such as apple, elm, hawthorn, and beech

Herbivorous; they pierce plant tissues to suck out nutrient-rich sap

They produce a white, waxy, cotton-like excretion for protection from predators and desiccation; they often aggregate in large, fluffy-looking colonies

Considered a minor garden pest as they can cause leaf curling, yellowing, and stunted growth; they produce honeydew which can lead to sooty mold growth