Corn earworm larvae are a common pest of grain sorghum. The larva has alternating light and dark stripes and tiny spines down the length of the body. The color of larvae varies considerably, but the head capsule is a creamy-yellow. Full grown larvae are about 1½ inches long. Corn earworms will feed in the whorls of young plants, like fall armyworm. However, feeding on the kernels of grain heads is more likely to cause economic damage.