Species: Hydroporus obscurus
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Arkavatnet | Rogaland, Norway | 1 | 1 | 0 | 1991-09-12 | |
| Elgtjern | Trøndelag, Norway | 1 | 1 | 0 | 1990-05-25 | |
| Grindheimsvatnet | Agder, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Hjørungdalsvatnet | Møre og Romsdal, Norway | 2 | 1 | 0 | 1992-09-16 | |
| Kruktjønna | Trøndelag, Norway | 1 | 1 | 0 | 1991-08-28 | |
| Krussætertjern | Østfold, Norway | 1 | 1 | 0 | 1990-06-01 | |
| Madsvannet | Nordland, Norway | 1 | 1 | 0 | 1991-09-12 | |
| Opsangervatnet | Vestland, Norway | 2 | 1 | 0 | 1990-09-26 | |
| Rossevatn | Rogaland, Norway | 6 | 1 | 0 | 1992-09-22 | |
| Seljebøvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1991-06-14 | |
| Svartaholtjørnet | Vestland, Norway | 2 | 1 | 0 | 1991-09-18 | |