Junebug, also called June beetle or May beetle, is a name for several large brown beetles often seen in the United States during May and June. Junebugs are usually seen at night, when light attracts them.
Junebugs eat the young leaves of trees and shrubs. They deposit their eggs in the ground in meadows, gardens, and fields. The young larvae are large, white grubs with brown heads. They burrow into the soil in autumn and stay there two years or more, feeding on roots of corn, grains, grasses, and vegetables. They come out in May or June as adult beetles.