Species: Heptagenia fuscogrisea
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Bogstadvannet | Oslo, Norway | 1 | 1 | 0 | 1995-06-09 | |
| Harestuvannet | Akershus, Norway | 1 | 1 | 0 | 1994-06-09 | |
| Kolbjørnviksjøen | Østfold, Norway | 3 | 1 | 0 | 1993-09-09 | |
| Korssjøen | Vestfold, Norway | 2 | 1 | 0 | 1995-09-14 | |
| Nøklevatnet | Innlandet, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Røyvannet | Telemark, Norway | 2 | 1 | 0 | 1993-09-10 | |
| Sætertjern | Akershus, Norway | 1 | 1 | 0 | 1996-10-24 | |
| Trytetjønnet | Buskerud, Norway | 1 | 1 | 0 | 1990-09-26 |