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Nymphs are small, flat and oval-shaped. They are translucent to yellow in colour and can be detected on the underside of the leaf. Adults are about 1mm long with a yellow body and two pairs of wings which are covered with a powdery, white secretion.
ETL: 5 Adult or nymph or both per leaf
Whiteflies are a highly polyphagous insect. Adults and larva pierce the leaves with their mouthparts and suck sap from the leaves. Honeydew excretions from the insects favor the growth of sooty mold fungi on the leaves. Feeding by the whiteflies causes weakening and early wilting of the plant, and reduces the plant growth rate. Whiteflies also transmit viruses which can reduce yields severely.