Three new species of Potamothrix (Oligochaeta, Naididae, Tubificinae) from Fuxian Lake, the deepest lake of Yunnan Province, Southwest China
Three new species of Potamothrix Vejdovský & Mrázek, 1902 (Oligochaeta: Tubificinae), P.praeprostatus sp.n., P.paramoldaviensis sp.n.and P.parabedoti sp.n., are reported from Fuxian Lake of Yunnan Province, Southwest China.P.praeprostatus differs from its allies by its prostate glands joining atria in its proximal to middle VIT E