Genus: Notonecta
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Stokkevannet | Telemark, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Stordammen | Akershus, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Store Nesttunvann | Vestland, Norway | 2 | 1 | 0 | 2013-04-23 | |
| Stølevannet | Vestland, Norway | 1 | 1 | 0 | 1995-10-18 | |
| Sætertjern | Akershus, Norway | 2 | 1 | 0 | 1992-09-19 | |
| Tjennane | Telemark, Norway | 1 | 1 | 0 | 1993-09-15 | |
| Tornesvatnet | Rogaland, Norway | 3 | 2 | 0 | 1994-09-08 | |
| Tretjønnet | Agder, Norway | 1 | 1 | 0 | 1990-06-26 | |
| Tveitevannet | Vestland, Norway | 5 | 1 | 0 | 2006-10-10 | |
| Ulfsbakktjønn | Vestfold, Norway | 3 | 1 | 0 | 1997-09-16 | |
| Varavannet | Vestland, Norway | 1 | 1 | 0 | 2013-09-03 | |
| Vikerauntjønna | Trøndelag, Norway | 1 | 1 | 0 | 1993-09-15 | |
| Øksnevadtjørna | Rogaland, Norway | 1 | 1 | 0 | 1993-10-07 | |
| Øvre Mjølsnes | Rogaland, Norway | 1 | 1 | 1 | 2009-05-30 | |
| Ålesundsaksla | Møre og Romsdal, Norway | 1 | 1 | 0 | 1999-09-28 | |
| Årstadtjødne | Rogaland, Norway | 4 | 2 | 0 | 1996-10-11 | |
| Årungen | Akershus, Norway | 8 | 1 | 0 | 1997-09-12 | |
| Åstveitvannet | Vestland, Norway | 3 | 1 | 0 | 1991-09-27 | |
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