Endothenia marginana, the downland marble, is a moth of the Tortricidae family. It was described by Adrian Hardy Haworth in 1811. It is found in almost all of Europe. The wingspan is 11–16 mm. Adults are on wing from late May to August. The larvae feed on Dipsacus fullonum, Betonica officinalis, Galeopsis species, Pedicularis species, Rhinanthus species and Plantago lanceolata. They feed within the seedheads of their host plant. Larvae can be found from September to June.