The length of the whitegrub larvae varies from 20 to 45 mm. Larvae are white with a C-shaped body, brown head, and three pairs of legs. The hind portion of the abdomen is slightly enlarged and appears darker due to the soil particles showing through the body wall. Two parallel rows of spines seen on the underside of the last abdominal segment distinguish true white grubs from similar-looking larvae. The larvae damage the roots of many commercial crops.