Thera obeliscata (Hübner, 1787):

E.Siberia, Irkutsk province, Ust-Orda envir., Kharat, at UV-light, 24-VII-1974, leg. E.Berlov The forewing length is 16 mm. det. E.Berlov

E.Siberia, lake Baikal near cape Bolshoi Solontsovyi, Nature Reserve «Baikalo-Lenskyi», at light (UV-diodes), 1-VIII-2005, leg. O.Berlov The forewing length is 13 mm. det. E.Beljaev