On the basis of analysis of modern literature and own data taxonomy, ecological and morphological characteristics of famyli Sididae of Ukrainian Roztocze are presented. 314 tests in 2008-2017 in Ukrainian Roztocze natural region were conducted. The research was conducted on living and fixed materials. In general 283 individuals of genus Sida and 157 individuals of genus Diaphanosoma had been examined. In reservoirs of the Ukrainian Roztozce Sida crystallina crystallina was identified. In the area of Ukrainian Roztocze were indicated three varieties of Diaphanosoma brachyurum:
The genus Macrothrix Baird, 1843 (Cladocera: Anomopoda: Macrothricidae) in hydrobiocenosis of the Ukrainian Roztocze and its surroundings. Ivanets O. On the basis of analysis of modern literature and own data biology, morphological and ecological characteristics of Macrothrix laticornis (Jurine, 1820) of Ukrainian Roztocze are presented. Basis of work makes 235 tests in 2007-2018. Female length changes in bounds of 0,58-0,69 mm. Male length changes in scopes between 0,38-0,41 mm. In the conditions of the Ukrainian Roztocze, M. laticornis occurs primarily among the thickets of the litoral reservoirs, in the adjacent to the bottom of the water horizon, and also among the silt.
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