Cryptolectica ensiformis is a moth of the family Gracillariidae. It is known from China (Hainan), India, Indonesia (Sulawesi), Japan (Tusima, the Ryukyu Islands, Honshū, Kyūshū, Shikoku) and Thailand.Global Taxonomic Database of Gracillariidae (Lepidoptera)
The wingspan is 9.2–11 mm.
The larvae feed on Quercus acuta and Quercus sessilifolia. They probably mine the leaves of their host plant.
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