Japanese beetles do damage to most trees by eating the leaves. They focus their feeding on the parts of the leaves between the leaf veins. After feeding, the leaves have an appearance like lace. They typically start at the top of the tree and work their way down. While this damage is unsightly, it is typically something that will not have a long-term, negative impact on a tree unless the tree has been otherwise weakened by other factors. That being said, Click here for a list of landscape plants likely to be attacked by Japanese Beetles.