White cotton wool like fluffy 'growth' found on the bark and branches of certain trees and shrubs.
Woolly aphids are usually seen as a fluffy white growth on the bark of plants including apples, pears, pyracantha, cotoneaster, elm and mountain ash. It is often mistaken for a fungal growth. The aphids hide under this 'cotton wool like material, they are oval, 2 mm in size and pink-brown. Feeding by woolly aphids can cause galls. They are often found close to pruning wounds.
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