What Is the Life Cycle of a June Bug?

June bugs, also called May or June beetles, go through a life cycle that spans one to three years. Adult beetles emerge from the ground at the end of spring or start of summer. After feeding for several weeks, they lay their eggs in the ground. After two to three weeks, grubs hatch. The grubs burrow deep underground to survive the winter. In the spring, they come closer to the surface, where they pupate and emerge as adults.