Diachrysia chryson (Esper, 1789): E.Siberia, 10 km E Irkutsk, at light, 25-VII-2009, leg. E.Berlov The forewing length is 19 mm. det. E.Berlov E.Siberia, Irkutsk, at UV-light, 30-VII-1974, leg. E.Berlov det. E.Berlov