In April and May, adult cockchafers fly singly in search of food. Melolontha melolontha ear deciduous tree and fruit tree leaves, particularly oaks, maple, sweet chestnut, beech, plum, and walnut trees. While adults are considered harmful only in large populations, the eating habits of larvae cause far more damage to crops. Larvae gnaw at small roots of field plants, and are indiscriminate feeders; they eat grain, grass, tree, and beet roots, moving as much as 30 cm a day while eating large sections of crop rootlets. Cockchafer larvae feed on new, fresh soil roots and do not usually eat decaying organic matter.
Plant Foods: leaves; roots and tubers
Primary Diet: herbivore (Folivore )
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