Cameraria umbellulariae is a moth of the Gracillariidae family. It is known from California, United States. The wingspan is about 9 mm. The larvae feed on Umbellularia californica. They mine the leaves of their host plant. The mine has the form of a large diffused blister-like mine on the upperside of the leaves. The pupa is enclosed in a semi-transparent flat oval silken web, within the mine.