| Macrostomum finnlandense (Ferguson, 1940) | Sep 18, 1951 |  |  | bank, among plants. | 
| Polycelis tenuis Ijima, 1884 | 1961 or earlier |  |  | (A. L.). | 
| Castrada (Castrada) hofmanni Braun, 1885 | 1963 or earlier |  |  | Janakkala:  Leppäkoski, Puujoki bei Rauhaniemi u. Sipilä | 
| Castrada (Castrada) hofmanni Braun, 1885 | 1963 or earlier |  |  | alte Tongruden in Rauhaniemi | 
| Castrada (Castrada) armata (Fuhrmann, 1894) | Sep 18, 1951 |  |  | u. bei Rauhaniemi | 
| Mesostoma productum (Schmidt, 1848) | May 23, 1958 |  |  |  | 
| Phaenocora unipunctata (Ørsted, 1843) | 1963 or earlier |  |  | Janakkala, Rauhaniemi, überschwemmte Uferwiesen des Puujoki, Vääksy, Uferwiese des Päijänne. | 
| Microdalyellia picta (Schmidt, 1848) | 1955 or earlier |  |  |  | 
| Gieysztoria expedita (Hofsten N, 1907) | 1955 or earlier |  |  | Puujoki bei Rauhaniemi, zwischen Pflanzen in 0- 25 cm Tief (A.L.) | 
| Castrella (Castrella) truncata (Abildgaard, 1789) | 1955 or earlier |  |  | Lehmtümpel |