Woolly Beech Aphid
Phyllaphis fagi
The Woolly Beech Aphid (Phyllaphis fagi) is a small, sap-feeding insect belonging to the aphid family (Aphididae), measuring between 1.5 and 3 mm in length. Its pale yellow to bluish-green body is covered in characteristic white or bluish-white waxy filaments that resemble tufts of cotton wool. Native to Europe and widely distributed across woodlands, parks, and gardens, this host-specific aphid feeds almost exclusively on beech trees (Fagus species). Overwintering as eggs in bark crevices and bud scales, nymphs hatch in spring as buds burst and form dense colonies on the undersides of leaves. Heavy infestations cause leaf curling, yellowing, and sticky honeydew deposits.
Group: Insects (Insecta)Red List status: LC • Least Concern