Stigmella auromarginella is a moth of the Nepticulidae family. It is found from Sweden to Portugal, Crete and Cyprus and from Ireland to Croatia. It is much more common in the southern part of the range. The wingspan is 3–5 mm. Adults are on wing from June to August and from September to November. The larvae feed on Agrimonia, Rubus fruticosus, Rubus sanctus and Rubus ulmifolius. They mine the leaves of their host plant. The mine consists of an unusually short corridor with a central line of frass that is irregularly interrupted. Pupation takes place outside of the mine.