Chrysocercops castanopsidis is a moth of the family Gracillariidae. It is known from Japan (Honshū, Iriomote, Isigaki, Okinawa and Shikoku).[1]
The wingspan is about 6.2–8 mm.
The larvae feed on Castanopsis cuspidata, Castanopsis sieboldii, Lithocarpus glaber and Pasania glabra. They probably mine the leaves of their host plant.