Lawn Beetles (Heteronychus arator) is a species of beetle in the subfamily Dynastinae (the rhinoceros beetles). It is commonly called African black beetle or black lawn beetle The African black beetle is an introduced beetle that appears similar to cockchafers but generally occurs earlier in the year and is usually found on or under the soil. Both adults and larvae attack pastures and cereals. The beetles are of considerable economic importance because, while they attack cereals, they also attack a wide range of horticultural crops and long-term pastures. These are Shiny black in color, Slow moving but can fly, relatively parallel body shape, found on or under lawn and soil surface,fly in late summer or early autumn.The adult lawn beetle will chew on grass stems causing fraying. Damage can be caused by adults feeding on the stems of young plants either underground or above the soil surface, often killing growing points so that the central shoots wither and the plants die. Older plants usually survive, but remain weak.