How to Manage Pests

Pests in Gardens and Landscapes

Pest identification and confirmation—Woolly apple aphids

Woolly apple aphids can be distinguished from other aphids by the waxy white or gray substance they secrete over their body surface. They may be confused with mealybugs; their waxy coating on makes them superficially similar, but their overall body shape is quite different. All aphids are small pear-shaped insects with long legs and antennae. Most species have a pair of tubelike structures called cornicles projecting outward from the hind end of the body. Cornicles on woolly apple aphid are very short. Burls on tree limbs and the swollen nodular root galls produced by this aphid are unique as well.

Woolly apple aphid
Woolly apple aphid
Green peach aphid
Green peach aphid
Mealybug
Mealybug
Rosy apple aphid
Rosy apple aphid

Statewide IPM Program, Agriculture and Natural Resources, University of California
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