New freshwater species of centrohelids Acanthocystis lyra sp. nov. and Acanthocystis siemensmae sp. nov. (Haptista, Heliozoa, Centrohelea) from the South Urals, Russia
Center of Shared Scientific Equipment “Persistence of microorganisms”, Institute for Cellular and Intracellular Symbiosis UB RAS, Orenburg, Pionerskaya st. 11, 460000, Russia
Laboratory of Water Microbiology, I.D. Papanin Institute for Biology of Inland Waters RAS, Borok, Russia