Corythoxestis tricalysiella is a moth of the family Gracillariidae. It is found on Ishigaki Island, in the southwest of the Ryukyu Islands, Japan.
The wingspan is 6.6âÂÂ7 mm.
The larvae feed on Tricalysia dubia (=Diplospora dubia), to which the specific name refers. The larvae mine the leaves of their host plant.