Acrocercops mantica is a moth of the family Gracillariidae. It is known from China (Guangdong), Hong Kong, India (Meghalaya), Indonesia (Java), Japan (Tusima, the Ryukyu Islands, Honshū, Shikoku, Kyūshū), Korea and Nepal.[1]
The wingspan is 7.8-10.2 mm.
The larvae feed on Castanopsis cuspidata, Castanopsis lamontii, Castanopsis sieboldii and Castanopsis tribuloides. They mine the leaves of their host plant.