Bothromesostoma personatum (Schmidt, 1848) Braun, 1885 accepted as Mesostoma personatum Schmidt, 1848 (ecology source)
Castrada (Castrada) hofmanni Braun, 1885 (ecology source)
Castrada (Castrada) intermedia (Volz, 1898) Luther, 1904 (ecology source)
Castrada (Castrada) lanceola (Braun, 1885) Luther, 1904 (ecology source)
Castrada (Castrada) viridis Volz, 1898 (ecology source)
Castrella (Castrella) truncata (Abildgaard, 1789) Sekera, 1906 (ecology source)
Dendrocoelum lacteum (Müller, 1774) (ecology source)
Dochmiotrema limicola Hofsten, 1907 (ecology source)
Gieysztoria cuspidata (Schmidt, 1861) Ruebush & Hayes, 1939 (ecology source)
Gieysztoria rubra (Fuhrmann, 1894) Ruebush & Hayes, 1939 (ecology source)
Gyratrix hermaphroditus Ehrenberg, 1831 (ecology source)
Macrostomum hamatum Luther, 1947 (ecology source)
Macrostomum obtusum Vejdovsky, 1895 (ecology source)
Macrostomum rostratum Papi, 1959 (ecology source)
Macrostomum tuba Graff, 1882 (ecology source)
Mesostoma lingua (Abildgaard, 1789) Schmidt, 1848 (ecology source)
Mesostoma productum (Schmidt, 1848) Leuckart, 1854 (ecology source)
Mesostoma punctatum Braun, 1885 (ecology source)
Microdalyellia armigera (Schmidt, 1862) Gieysztor, 1938 (ecology source)
Microdalyellia brevimana (Beklemischev, 1921) Gieysztor, 1938 (ecology source)
Microdalyellia fusca (Fuhrmann, 1894) Ruebush & Hayes, 1939 (ecology source)
Microdalyellia rossi (Graff, 1911) Gieysztor, 1938 (ecology source)
Microstomum lineare (Müller OF, 1773) (ecology source)
Olisthanella obtusa (Schultze, 1851) Luther, 1904 (ecology source)
Olisthanella truncula (Schmidt, 1858) Voigt, 1892 (ecology source)
Opistomum fuscum Weise, 1942 (ecology source)
Opistomum immigrans Ax, 1956 (ecology source)
Otomesostoma auditivum (Forel & Du Plessis, 1874) Hofsten, 1907 (ecology source)
Phaenocora rufodorsata (Sekera, 1904) Graff, 1909 (ecology source)
Phaenocora typhlops (Vejdovsky, 1880) Hofsten, 1907 (ecology source)
Phaenocora unipunctata (Ørsted, 1843) Bendl, 1908 (ecology source)
Planaria torva (Müller, 1773) Müller, 176 (ecology source)
Prorhynchus stagnalis Schultze, 1851 (ecology source)
Provortex pallidus Luther, 1948 (ecology source)
Rhynchomesostoma lutheri Papi, 1963 (ecology source)
Rhynchomesostoma rostratum (Müller, 1774) Luther, 1904 (ecology source)
Stenostomum grabbskogense Luther, 1960 (ecology source)
Stenostomum leucops (Duges, 1828) Schmidt, 1848 (ecology source)
Stenostomum unicolor Schmidt, 1848 accepted as Stenostomum sphagnetorum Papi, 1960 (ecology source)
Strongylostoma elongatum Hofsten, 1907 (ecology source)
Strongylostoma simplex Meixner, 1915 (ecology source)
Tetracelis marmorosa (Müller, 1774) Ehrenberg, 1831 (ecology source)
Typhloplana viridata (Abildgaard, 1789) Ehrenberg, 1831 (ecology source)