Eudonia lineola is a species of moth in the Crambidae family. It is found in Great Britain, Ireland, the Netherlands, France, Spain, Portugal and on Sardinia, the Canary Islands, as well as in North Africa, including Morocco. The wingspan is 21–38 mm. Adults have contrasting black and white markings, sprinkled with a greenish-brown tone. They are on wing from July to August in one generation per year. The larvae feed on lichens, including Parmelia species.