Billbug larvae are white, legless, 5/8-inch long, humpbacked grubs with a yellow to brown head, which is harder in texture than the soft white body. Destructive Stages: Adults feed on grass blades or stems, but the major damage is caused by larvae feeding inside the stem, at the crown or on roots.

Do Billbug larvae have legs?

Billbug larvae are white with reddish-brown heads and look very similar to white grubs, another common lawn pest. However, billbug larvae do not have legs; white grubs do.

What does bluegrass Billbug look like?

Bluegrass Billbug. Like all billbug species, bluegrass billbug adults can be easily recognized by the presence of a long snout on the front of the head. They are 7-8 mm long and gray to black in color, but they are sometimes coated with soil making them appear brown or beige.