Eurystomata and Phylactolaemata fauna at the main relict continental water-bodies of Euroasia

At the Euroasian territory 4 Regions are situated: Palearctic, Pont-Caspian brackish water, Baical, China- Indian Regions, with 9 subregions, which includes largest, oldest, relict lakes: Caspian Sea, Aral Sea, Ochrid, Lake of Tiberias, Baical, Baunt, Busani, Khubsugul, Telezkoje, Biwa, Poso, Lanao and others. The Eurystomata and Phylactolaemata take important place in hydrobiota of thеsе reservoirs. At this deepest water-bodies Fredericella sultana (Phylactolaemata) acquires another giant form, which was descript as single species. It is the zoarial polymorphism. And it is the primitive form of zoarial polymorphism. The another Phylactolaemata specia distributes at the shallow coast and bays usually. The endemic Phylactolaemata specia at these lakes are absent usually. The Phylactolaemata of lake Biwa distinguish from other Euroasian relict lakes. There are specia of China-Indian Region predominantly. Lep..casmiana is a Japan species. L.carteri widely distributes at the Amur-Japanian Subregion. Lep. casmiana at the Europe (Volga river etc) is the introduction probably. L. carteri at the Europe (Volga river, Bulgaria etc) is the introduction probably or occurrence on the north boundary of areal. The Eurystomata zoarial polymorphism at these oldest deepest lakes is more noticeable. H.placoides at the fresh-water lake Baical has 4 local forms. At the fresh-water lake Busani (Baunt lakes system) and the lake Telezkoje Pal. articulata zoaria widely distributes. But Pal.articulata at the Baical is rare, and its finds are in need of confirming. The ecological forms of Pal.articulata are not find. At the brackish-water continental reservoirs different local forms was found: in the Aral lake was found Victorella bergi and Bowerbankia imbricata aralensis, in the Caspian lake - B.imbricata caspia, in the Sevastopol Bay of the Black Sea - B.stationis. These forms was descript as single species and subspecies, but they may be local ecological forms.