Plant-indicators of the flying periods of Rhopalocera Lepidopterans (Lepidoptera, Diurna) in the Ussuri reserve

11 species of vascular plants which flowering phenological stage coincides with the flying periods of Lepidoptera, Diurna are presented in the article. The revealed perennial species are the flying period indicators in 9 background species of the day lepidopterans in the Ussuri reserve.