| Macrostomum infundibuliferum Plotnikow, 1905 | 1905 or earlier | | | |
| Dalyellia sibirica (Plotnikow, 1905) | 1905 or earlier | | | moorland water. |
| Dalyellia rhombigera Plotnikow, 1905 | 1905 or earlier | | | |
| Dalyellia cuspidata (Schmidt, 1861) | 1913 or earlier | | | pools and lakes. |
| Dalyellia striata (Plotnikow, 1905) | 1905 or earlier | | | moor water. |
| Dalyellia armigera Schmidt, 1861 | 1913 or earlier | | | |
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1913 or earlier | | | ubiquitous, very active, prefers swimming at the surface of cold and warm, standing and flowing water. |
| Strongylostoma radiatum (Müller, 1774) | 1913 or earlier | | | ponds and lakes. |
| Rhynchomesostoma rostratum (Müller, 1774) | 1913 or earlier | | | |
| Castrada (Castrada) hofmanni Braun, 1885 | 1913 or earlier | | | |
| Castrada (Castrada) viridis Volz, 1898 | 1913 or earlier | | | |
| Mesostoma productum (Schmidt, 1848) | 1913 or earlier | | | puddles and lakes of Europe. |
| Mesostoma lingua (Abildgaard, 1789) | 1913 or earlier | | | mud and detritus, of pools, ponds and lakes. Graff notes that this was Plotnikow's M. sigmoideum, which he considers M. lingua. |
| Mesostoma ehrenbergii (Focke, 1836) | 1913 or earlier | | | |
| Vortex sibiricus Plotnikow, 1905 | 1905 or earlier | | | |
| Vortex rhombiger Plotnikow, 1905 | 1905 or earlier | | | |
| Vortex fuscus Fuhrmann, 1894 | 1905 or earlier | | | |
| Vortex striatus Plotnikow, 1905 | 1905 or earlier | | | |
| Vortex pictus Schmidt, 1848 | 1905 or earlier | | | |
| Vortex obscurus Plotnikow, 1905 | 1905 or earlier | | | Lake Birtschikul. |
| Mesostoma ehrenbergii (Focke, 1836) | 1905 or earlier | | | Lake Birtschikul. |
| Mesostoma sigmoideum Plotnikow, 1905 | 1905 or earlier | | | |
| Mesostoma productum (Schmidt, 1848) | 1905 or earlier | | | |
| Mesostoma rostratum (1) Hallez, 1879 | 1905 or earlier | | | |
| Castrada (Castrada) acuta Braun, 1885 | 1905 or earlier | | | |
| Castrada (Castrada) viridis Volz, 1898 | 1905 or earlier | | | |
| Castrada (Castrada) hofmanni Braun, 1885 | 1905 or earlier | | | |
| Castrada (Castrada) lanceola (Braun, 1885) | 1921 or earlier | | | Sibirien, Tomsk. |
| Castrada (Castrada) hofmanni Braun, 1885 | 1905 or earlier | | | Sibirien, Tomsk. |
| Strongylostoma radiatum (Müller, 1774) | 1921 and earlier | | | |
| Strongylostoma elongatum elongatum Hofsten N, 1907 | 1924 or earlier | | | |
| Rhynchomesostoma rostratum (Müller, 1774) | 1905 or earlier | | | |
| Olisthanella truncula (Schmidt, 1858) | 1921 or earlier | | | |
| Mesostoma ehrenbergii (Focke, 1836) | 1905 or earlier | | | Sibirien, Tomsk. |
| Mesostoma productum (Schmidt, 1848) | 1921 or earlier | | | |
| Bothromesostoma personatum (Schmidt, 1848) | 1905 or earlier | | | |
| Bothromesostoma essenii Braun, 1885 | 1921 or earlier | | | |
| Phaenocora typhlops (Vejdovsky, 1880) | 1921 or earlier | | | |
| Macrostomum rostratum Papi, 1951 | 1960 or earlier | | | Russland. M. phytophilum Leningrad; Perm. Sibirien, Tomsk u.s.w. (Beklemischev). |
| Macrostomum distinguendum Papi, 1951 | 1960 or earlier | | | Russland: Umgebung von Leningrad; Sudmir; Perm; Tomsk (Beklemischev). |
| Prorhynchus stagnalis Schultze, 1851 | 1921 or earlier | | | |
| Microdalyellia armigera (Schmidt, 1862) | 1921 or earlier | | | |
| Microdalyellia fairchildi (Graff, 1911) | 1921 or earlier | | | |
| Microdalyellia brevimana (Beklemischev, 1921) | 1921 or earlier | | | |
| Gieysztoria cuspidata (Schmidt, 1861) | 1905 or earlier | | | Gouv. Tomsk, Kreis Mariinsk: Elisabetinsky u. Korobeinikowo. |
| Gieysztoria rubra (Fuhrmann, 1894) | 1921 or earlier | | | Perm u. Tomsk; Tümpel. |
| Gieysztoria infundibuliformis (Fuhrmann, 1894) | 1921 or earlier | | | |
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1921 or earlier | | | Tomsk. |