The adult of this insect is a very small (1/8 inch) brown weevil with dark spots on the back. It sports a short, curved snout and has the ability to hop.
Eggs from overwintering adults hatch on newly formed leaves. The larva produces a serpentine pattern in the leaf that terminates on a leaf edge. Adults emerged some time ago and are feeding on the leaves. Adult feeding damage produces a shothole pattern in the leaves. Heavily fed upon leaves appear lacy. Feeding can continue for a long period of time. There is one generation per year and so when the adults disappear, there should be no further damage this year.
I have not seen any control strategies for this insect. Trees typically recover from spring defoliations. (Ward Upham)