Colostygia aptata (Hübner, 1813):
E.Siberia, Nature Reserve «Baikalo-Lenskyi», lake Baikal,
cape Bolshoi Solontsovyi, at light (UV-diodes),
1-VIII-2005, leg. O.Berlov
The forewing length is 13 mm.
det. J.Viidalepp