| Gieysztoria lugubris wigrensis (Gieysztor, 1938) | 1938 or earlier | | | Polen. Wigrysee, auf Chara-Wiesen und in steinigem Litoral ohne höhere Vegetation. Pertysee, steiniges Litoral (Gieysztor). |
| Dalyellia penicilla typica Gieysztor, 1934 | 1931 | | | Das Untersuchungsmaterial sammelte ich während meines Aufenthaltes in der Hydrobiologischen Wigry-Station (1931). |
| Microdalyellia lugubris wigrensis Gieysztor, 1938 | 1934-1937 | | | |
| Microdalyellia koiwi (Eggers, 1925) | 1934-1937 | | | Trotzdem kann ich jedoch meine Exemplare, die aus kleinen Gewässern aus der Gegend von Wigry stammen, ohne Zweifel mit M. Koiwi identifizieren. |
| Dendrocoelum lacteum (Müller, 1773) | 1923 or earlier | | | Weiter südlich in Novgorod, See Wigry. |
| Opistomum pallidum Schmidt, 1848 | 1939 or earlier | | | Polen: Wigrysee |
| Castrada (Castrada) instructa Hofsten N, 1907 | 1939 or earlier | | | Polen, Wigry. |
| Castrada (Castrada) viridis Volz, 1898 | 1939 or earlier | | | |
| Castrada (Castrada) armata (Fuhrmann, 1894) | 1938 or earlier | | | |
| Tetracelis marmorosa (Müller, 1773) | 1939 or earlier | | | Polen: Wigry-Tümpel; Tatra-Seen, bis 1686 m ü.M. |
| Strongylostoma radiatum (Müller, 1774) | 1939 or earlier | | | |
| Rhynchomesostoma rostratum (Müller, 1774) | 1939 or earlier | | | |
| Dochmiotrema limicola Hofsten N, 1907 | 1938 or earlier | | | Süsswasserpsammon des Wigry-Sees. |
| Olisthanella truncula (Schmidt, 1858) | 1939 or earlier | | | |
| Mesostoma productum (Schmidt, 1848) | 1939 or earlier | | | |
| Microdalyellia brevimana (Beklemischev, 1921) | 1932 or earlier | | | |
| Microdalyellia picta (Schmidt, 1848) | 1939 or earlier | | | |
| Microdalyellia nanella (Beklemischev, 1921) | 1939 or earlier | | | Wigry u. Warschau, austrocknende Kleingewässer |
| Dalyellia penicilla diminuta Gieysztor, 1929 | 1939 and earlier | | | |
| Dalyellia scoparia (Schmidt, 1858) | 1939 and earlier | | | |
| Gieysztoria cuspidata (Schmidt, 1861) | 1939 or earlier | | | Wigry |
| Microdalyellia wiszniewskii Gieysztor, 1938 | 1938 or earlier | | | Wigry-See. Hygpsammon (Wiszniewski, nach Gieysztor) |
| Gieysztoria expedita (Hofsten N, 1907) | 1939 or earlier | | | Wigry-See und Tümpel |
| Gieysztoria rubra (Fuhrmann, 1894) | 1939 or earlier | | | Wgiry, Tümpel. |
| Gieysztoria virgulifera (Plotnikow, 1906) | 1939 or earlier | | | Charawiesen u. Lemna-Tümpel. |
| Gieysztoria euchroa (Gieysztor, 1926) | 1939 or earlier | | | Wigry u. Warschau |
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1938 or earlier | | | Wigrysee: Charawiesen. |