Woolly Apple Aphid Lifecycle

Nymph

Winged Adult

Woolly apple aphids overwinter as adults on roots and aerial parts of apple trees

By early summer, large numbers of nymphs are produced. First-instar nymphs migrate

up and down the tree.

Wingless adults have reddish to purple bodies and are completely covered with woolly white wax.

Root colonies cause swollen, nodular masses of gall tissue to form, stunting the tree.

Aerial colonies of woolly apple aphids can cause burrs on tree limbs

Pest ID: Aerial colony of wingless adult female woolly apple aphids

Pest ID: Winged adult female woolly apple aphid (waxless)