Bucculatrix humiliella is a moth of the Bucculatricidae family. It is found from Fennoscandia to the Pyrenees and the Alps and from Great Britain to Poland. The wingspan is 8–9 mm. The larvae feed on Achillea millefolium and Tanacetum vulgare. They mine the leaves of their host plant. Young larvae mine out a fine leaf segment completely, leaving a black, central frass line. Older larvae live free on the upper side of the leaf, causing window feeding.