Syngrapha diasema (Boisduval, 1829): E.Siberia, lake Baikal, Nature Reserve «Baikalo-Lenskyi», Baikalskyi Mts. ridge, pass Solntsepad envir. near lake Izumrudnoe, 1200 m, 27-VII-2005, leg. O.Berlov The forewing length is 17,5 mm. det. E.Berlov E.Siberia, Transbaikalia, Chita envir., airport Kadala, 18-VII-1968, leg. E.Berlov The forewing length is 19 mm. det. A.Matov