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Dark and pale lesions from infection by Tomato Spotted Wilt Virus spread during feeding by western flower thrips, Frankliniella occidentalis.

5-week old petunia with western flower thrips feeding scars and frass (right leaf) and dark viral lesions (left leaf) 4 days after infection with tomato spotted wilt virus, Diane Ullman lab, UC Davis Credit: Jack Kelly Clark — Credit: Jack Kelly Clark

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