The alder moth (Acronicta alni) is a moth of the family Noctuidae. It is found in Europe (from southern Fennoscandia to Spain, Italy and the Balkans), Turkey, the European part of Russia and the neighbouring countries, the Caucasus, the Ural, southern Siberia, Transbaikalia, the Russian Far East (Primorye, Sakhalin, southern Kuriles, Khabarovsk and the Amur region), China, Japan (Hokkaido and Honshu) and the Korean Peninsula. \n* Acronicta alni \n* Caterpillar \n* Caterpillar on leaf The adults fly at night from May to June and are attracted to light.