Species: Gyrinus opacus
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Gravdalsvatnet | Vestland, Norway | 1 | 1 | 0 | 1990-09-25 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1990-06-05 | |
| Kolbjørnviksjøen | Østfold, Norway | 2 | 1 | 0 | 1990-08-29 | |
| Kruktjønna | Trøndelag, Norway | 1 | 1 | 0 | 1991-08-28 | |
| Krussætertjern | Østfold, Norway | 1 | 1 | 0 | 1990-10-23 | |
| Sagtjernet | Innlandet, Norway | 3 | 1 | 0 | 1994-10-04 | |
| Stokkavatnet | Nordland, Norway | 1 | 1 | 0 | 1990-09-18 | |
| Vikerauntjønna | Trøndelag, Norway | 2 | 1 | 0 | 1992-09-11 |