| Baicalellia brevitubus (Luther, 1918) | [with synonyms] | w | primary taxonomic authority (describer) | 48, 51-52, fig. 1 |
| Provortex brevitubus Luther, 1918 | | w | primary taxonomic authority (describer) | |
| Provortex breviductus (Luther, 1918) | | w | primary taxonomic authority (describer) | |
| Gyratrix hermaphroditicus Luther, 1918 | | w | primary taxonomic authority (describer) | |
| Promesostoma balticum Luther, 1918 | | w | primary taxonomic authority (describer) | 49, 52, fig. 2 |
| Macrostomum viride (2) Luther, 1918 | | w | primary taxonomic authority (describer) | |
| Gieysztoria sibirica (Plotnikow, 1905) | [with synonyms] | w | other taxonomic work | |
| Haplovortex brevitubus (Luther, 1918) | | w | primary taxonomic authority (describer) | 51 |
| Catenula lemnae Duges, 1832 | [with synonyms] | w | other taxonomic work | 48 |
| Macrostomum appendiculatum Fabricius, 1826 | [with synonyms] | w | other taxonomic work | 48 |
| Provortex balticus (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 48 |
| Proxenetes flabellifer Jensen, 1878 | [with synonyms] | w | other taxonomic work | 49 |
| Promesostoma marmoratum (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 49 |
| Phaenocora rufodorsata (Sekera, 1904) | [with synonyms] | w | latest taxonomic authority | 49 |
| Opistomum arsenii Nasonov, 1917 | | w | other taxonomic work | 49 |
| Castrada (Castrada) stagnorum Luther, 1904 | [with synonyms] | w | other taxonomic work | 50 |
| Castrada (Castrada) sphagnetorum Luther, 1904 | | w | other research on this sp. | |
| Castrada (Castrada) neocomensis Volz, 1898 | | w | other research on this sp. | 50 |
| Strongylostoma radiatum (Müller, 1774) | [with synonyms] | w | other taxonomic work | |
| Rhynchomesostoma rostratum (Müller, 1774) | [with synonyms] | w | other research on this sp. | 50 |
| Olisthanella obtusa (Schultze, 1851) | [with synonyms] | w | other taxonomic work | 50 |
| Mesostoma lingua (Abildgaard, 1789) | [with synonyms] | w | other research on this sp. | |
| Bothromesostoma personatum (Schmidt, 1848) | | w | other taxonomic work | |
| Bothromesostoma essenii Braun, 1885 | | w | other research on this sp. | |
| Phaenocora typhlops (Vejdovsky, 1880) | [with synonyms] | w | other taxonomic work | 49 |
| Gieysztoria expedita (Hofsten N, 1907) | [with synonyms] | w | other taxonomic work | |
| Phaenocora megalops (Duges, 1830) | [with synonyms] | w | other research on this sp. | 49 |
| Dalyellia sibirica (Plotnikow, 1905) | | w | other taxonomic work | |
| Polycystis goettei Bresslau, 1906 | | w | other taxonomic work | |
