Thiodia citrana, the lemon bell, is a species of moth of the Tortricidae family. It is found in China (Hebei, Xinjiang), Japan, Iran, Asia Minor, Turkmenistan, Russia, Kazakhstan, North Africa and Europe. The habitat consists of rough grasslands and dry pastures. The wingspan is 16-21 mm. Adults are on wing from June to September in western Europe. The larvae feed on Achillea millefolium, Artemisia campestris, Artemisia vulgaris, Tanacetum vulgare and Anthemis cotula. They feed on the flowerheads of their host plant from within a spinning (a shelter like the web of a spider).