Species: Tårnformet ferskvannsgjellesnegl (Valvata piscinalis)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Frøylandsvatnet | Rogaland, Norway | 4 | 1 | 0 | 1993-09-29 | |
| Hammervatnet | Trøndelag, Norway | 1 | 1 | 0 | 1992-09-28 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1990-08-28 | |
| Kjemsjøen | Innlandet, Norway | 1 | 1 | 0 | 1990-09-17 | |
| Reinsvolldammen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Sillongen | Innlandet, Norway | 1 | 1 | 0 | 1990-05-22 |