Aglia tau
Aglia tau, the tau emperor, is a moth of the family Saturniidae. It is found in Europe and across Central Asia to the Pacific coast. The species was first described by Carl Linnaeus in his 1758 10th edition of "Systema Naturae". The wingspan is 60–84 mm. The moth flies in one generation from March to July depending on the location. The larvae primarily feed on European beech, but also birch, "Alnus glutinosa", "Salix caprea." and "Sorbus aucuparia". The larvae look rather like hickory horned devil caterpillars in the early instar