Genus: Synedra
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Borrevannet | Vestfold, Norway | 1 | 1 | 0 | 2003-05-19 | |
| Frøylandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1991-04-24 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1996-09-18 | |
| Korssjøen | Vestfold, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1990-06-06 | |
| Myklebustvannet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-25 | |
| Semsvannet | Akershus, Norway | 2 | 2 | 0 | 1989-09-21 | |
| Stavsjø | Innlandet, Norway | 1 | 1 | 0 | 1990-05-28 | |
| Tveitevannet | Vestland, Norway | 1 | 1 | 0 | 1989-09-07 |