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The flower thrips, Frankliniella tritici (Fitch). These are the most abundant and widely distributed thrips in the U.S. Adults are yellow and orange and about 1/20 inch long. Their feeding produces necrotic spots or blotches on flower petals and rough callous tissue on leaves. They feed primarily on various grasses, wild flowers, clover and citrus blossoms, then migrate to flowering woody plants.
Common host plants: Roses, particularly white roses as well as countless other flowers.