Answer:
Food. Adult May beetles eat plant leaves (the genus name, Phyllophaga, means “leaf eater”) and flowers. Larval May beetles (grubs) eat roots and decaying plant material in the soil. When they are numerous, then can damage lawns, gardens, and crops.
Explanation:
May beetle adults feed primarily on tree leaves, eating at leaf margins, sometimes to the midvein. Damaged leaves are commonly seen on crabapple, ash, oak, and other broad-leaved trees at this time of year. Damage can be puzzling because no insects are present during the day
