Cameraria macrocarpae is a moth of the Gracillariidae family. It is known from Manitoba, Canada. The larvae feed on Quercus macrocarpa. They mine the leaves of their host plant. The mine has the form of a blotch mine. The larva feeds on the palisade parenchyma of the leaves. The larvae have two morphologically distinct forms and seven instars. It overwinters in the sixth instar, inside the mined leaf. Larvae from each egg cluster form a common mine on the upper surface of the leaf. The mines are brownish and each contains several larvae.