Biston betularius (Linné, 1758):
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E.Siberia, Irkutsk envir., at UV-light, 2-VII-1973, leg. E.Berlov
The forewing length is 21 mm. det. E.Berlov |
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E.Siberia, Irkutsk province, Ust-Orda envir., Kharat,
at UV-light, 25-VII-1975, leg. E.Berlov The forewing length is 22,5 mm. det. E.Berlov |
