Woolly Apple Aphid Lifecycle: Nymphs, Winged Adults, Colonies

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eAfghanAg

UC Davis Afghanistan Agriculture Pest Management Woolly Apple Aphid Lifecycle

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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)

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