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Grape mealybug
Rufus Isaacs, MSU Entomology
Home > Scouting guide> grape mealybug
Mealybugs are a sporadic pest of grapes in the eastern United States. Adults are soft, oval, flat, distinctly segmented and covered with a waxy layer that extends into spines along the body margin and the posterior end. The pinkish body is visible through the powdery wax. Mealybugs are most commonly found in the crevices of the wood or on berries near the trunk. They may be tended by ants that feed on honeydew.

Mealybug damage is primarily cosmetic and occurs when honeydew produced by the feeding insects drops onto nearby leaves and fruit. The honeydew acts as a growth medium for sooty molds that can spoil fruit quality.

Grape mealybug damage Grape mealybug
Sooty mold developing on mealybug honeydew. Adult female with an ant. 3 mm.
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Funding for this web site provided by Project GREEEN, American Farmland Trust, EPA Region 5's Strategic Agricultural Initiative program, The National Foundation for IPM Education, the Center for Agricultural Partnerships and the MSU Integrated Pest Management Program in collaboration with MSU Extension and the Michigan Agricultural Experiment Station. Partially support from NC-IPM Center.

05/26/11 Contact: E. Haney
     
Michigan Agricultural Experiment Station Michigan State University Extension