They are beetles with long snouts, or bills, that carry to the tip a pair of strong jaws or mandibles with which the beetles chew their food. Clay yellow to reddish brown to jet black in color. The beetles burrow in the grass stems near the surface of the soil and also feed on the leaves. Several species of billbugs damage lawns. The bluegrass billbug is a bluegrass pest. The Hunting Billbug causes damage to Zoysia grass.
Source: American Lawns