Phylloporia bistrigella is a moth of the Incurvariidae family. It is found in western, northern and central Europe and north-eastern North America. The wingspan is 7–9 mm. The larvae feed on Betula species. They mine the leaves of their host plant, usually encircling a good part of the leaf, and finishing in a whitish blotch with scattered frass. It then cuts out an oval case from this position and drops to the ground. The leaf area enclosed within the mine becomes paler and vacated mines are quite distinctive.