Thysanoptera (thrips) are small sap-sucking pests, which are puncturing the surface of a plant causing leaves to develop streaks or turn brown or silvery.
Flowers or leaves may develop silvery streaks. Heavily infested leaves appear brownish or silvery, and growing points may become contorted. Some species of thrips leave sooty spots of black fecal matter on the leaves. Thrips also vector plant diseases.
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