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A rhododendron showing the effects of damage by thrips, which are small insects that rasp the foliage and consume the sap, eventually causing the leaves to delaminate, creating a silvery effect. The undersides of the foliage are often covered with the excretions of the thrips, which live almost exclusively under the leaves. Adult and juvenile thrips can be discerned in the full size version of this image. pests-and-diseases-3512htm'>Plant. Pests and Diseases
