Handpick or clip out rolled leaves. Small leaf-feeding caterpillars can be killed with an application of the microbial insecticide Bacillus thuringiensis. Look for the caterpillar or its frass inside. Prune and destroy damaged buds. Unlike pear slug, this species has apparent legs and looks like a caterpillar.
Young larvae skeletonize the lower leaf surface while mature larvae chew large holes in leaves.
These pests have many natural enemies. They may be washed off with a strong stream of water or killed with an application of insecticidal soap. Larvae are white and up to 1 inch long with enlarged heads. Adult beetles do not significantly damage roses. Eggs tend to be laid on stressed rose plants, especially in bark wounds caused by sunburn or disease.