Drepana curvatula (Borkhausen, 1790):

E.Siberia, lake Baikal, Khamar-Daban Mts., Snezhnaya river valley, 4 km SW Vydrino, 500 m, 25-VI-2006. Photo by O.Berlov.

E.Siberia, Irkutsk envir., Parfenovka, on Betula, 4-VII-2003, leg. E.Berlov The forewing length is 19 mm. det. E.Berlov