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Thrips

Thrips (Thysanoptera), although seldom seen, are 2 to 3 mm long. They suck the juice from plants leaving small white, yellow or purple marks sometimes so numerous that the leaves have a white blast appearance. Sometimes they leave lines of damaged cells on the underside of leaves causing the leaves to curl inwards. This provides a haven for the insects. If the leaves are unfolded the insect or their larvae may be seen. Thrips are the carriers of many plant diseases including viruses.

Control is by systemic insecticides.

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