Diversity of chrysophycean stomatocysts (Chrysophyta) in Kader mire of the Kurgalsky Natural Reserve

In this work, we report on 18 stomatocyst morphotypes identified in the samples from the Kader mire, including 3 ones identified to the species; morphotype numbers were defined for 14 stomatocysts; one morphotype is described as new to science. Three stomatocysts are new to Europe, five are new to Russia, eight – to the Northwestern region. The descriptions of the cysts based on the electron-microscopic data (SEM), and information on their locality, distribution and ecology are provided. Our results add to knowledge of the chrysophyte flora of the Northwestern Russia.