Cryptolectica ensiformis is a moth of the family Gracillariidae. It is known from China (Hainan), India, Indonesia (Sulawesi), Japan (Tusima, the Ryukyu Islands, Honshà «, Kyà «shà «, Shikoku) and Thailand.
The wingspan is 9.2âÂÂ11 mm.
The larvae feed on Quercus acuta and Quercus sessilifolia. They probably mine the leaves of their host plant.