Adults make noise in flight, letting you know they are present. They skip around to various forms of vegetation in search of food.
Larvae (grubs) hatch underground and feed on the roots of grasses, vegetables and ornamental plants. This can be problematic for golf courses as the pristine turf is compromised by the grubs. It can also cause damage to crops that humans eat or produce to sell, like tobacco. A long rainy spell can cause the grubs to dig their way to the surface of the soil to avoid drowning, but they will try to go back underground once the soil is dry enough.