Eucosma wimmerana is a species of moth of the family Tortricidae. It is found in China (Tianjin, Hebei, Henan, Shaanxi, Gansu, Xinjiang), Mongolia, Japan, Russia, Kazakhstan[1] and Europe, where it has been recorded from Sicily, France, the Netherlands, Germany, Austria, Switzerland, Italy, the Czech Republic, Slovakia, Poland, the Baltic region, Slovenia and Romania.[2]
The wingspan is 14–17 mm. Adults are on wing from June to July.
The larvae feed on Artemisia campestris and Artemisia dracunculus. Larval feeding results in gall formation.[3] Larvae can be found from September to May.