The grape and obscure mealybugs closely resemble each other. Both mealybugs are most damaging in old trees with rough bark that shelter overwintering egg masses and crawlers. Eggs are yellowish to orange and are laid in a cottony mass. The young crawlers are orange. Mature mealybugs are about 0.2 inch (5mm) long with dark purple-gray, somewhat flattened bodies that are uniformly covered with a white powdery wax. Long caudal filaments along the lateral margin of the body become progressively shorter toward the head.
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