Nemophora bifasciatella is a moth of the family Adelidae or fairy longhorn moths. It was described by Syuti Issiki in 1930. It is found in Japan (Hokkaido, Honshu, Shikoku, Kyushu).
The wingspan is 10–13 mm.Taxonomic Notes on Nemophora bifasciatella Issiki, with Descriptions of Its Two New Allied Species from Japan and the Russian Far East (Lepidoptera, Adelidae)
The larvae possibly feed on Hydrangea paniculata.
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