Species: Vannskorpion (Nepa cinerea)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Akersvannet | Vestfold, Norway | 1 | 1 | 0 | 1995-09-07 | |
| Arkavatnet | Rogaland, Norway | 1 | 1 | 0 | 1992-09-22 | |
| Bogstadvannet | Oslo, Norway | 1 | 1 | 0 | 1993-06-10 | |
| Bøbekken | Akershus, Norway | 1 | 1 | 0 | 2000-09-08 | |
| Dælivannet | Akershus, Norway | 2 | 1 | 0 | 1992-09-10 | |
| Erlandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 2001-09-27 | |
| Fløyta | Akershus, Norway | 1 | 1 | 0 | 1992-06-12 | |
| Frøylandsvatnet | Rogaland, Norway | 2 | 1 | 0 | 1993-10-20 | |
| Hanabergsmarka | Rogaland, Norway | 1 | 1 | 0 | 2010-09-10 | |
| Harestuvannet | Akershus, Norway | 1 | 1 | 0 | 2004-09-01 | |
| Illestadvatnet | Vestfold, Norway | 1 | 1 | 0 | 2002-08-27 | |
| Jaren skole | Innlandet, Norway | 1 | 1 | 0 | 2013-09-27 | |
| Jarenvannet | Innlandet, Norway | 6 | 1 | 0 | 1993-09-04 | |
| Jomfrudammen | Telemark, Norway | 1 | 1 | 0 | 2008-09-30 | |
| Kolbjørnviksjøen | Østfold, Norway | 4 | 1 | 0 | 1993-09-09 | |
| Kolbotnvannet | Akershus, Norway | 1 | 1 | 0 | 1990-09-25 | |
| Korssjøen | Vestfold, Norway | 1 | 1 | 0 | 1996-09-09 | |
| Kverndammen | Telemark, Norway | 2 | 1 | 0 | 1990-08-30 | |
| Maltjern | Akershus, Norway | 1 | 1 | 0 | 1992-06-23 | |
| Midsjøvannet | Akershus, Norway | 2 | 1 | 0 | 1993-09-19 | |
| Mosvatnet | Rogaland, Norway | 6 | 1 | 0 | 1995-09-14 | |
| Nitelva ved Smedstusvingen | Akershus, Norway | 5 | 1 | 0 | 2013-06-07 | |
| Nøklevann | Oslo, Norway | 1 | 1 | 0 | 1989-10-04 | |
| Oftenesbekken | Agder, Norway | 1 | 1 | 0 | 2002-06-11 | |
| Rossevatn | Rogaland, Norway | 1 | 1 | 0 | 1991-05-27 | |
| Sagtjernet | Innlandet, Norway | 4 | 1 | 0 | 1992-06-16 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Skirstadtjernet | Innlandet, Norway | 1 | 1 | 0 | 2012-09-26 | |
| skoklefalltjern | Akershus, Norway | 1 | 1 | 0 | 2004-09-02 | |
| Slettebøvannet | Rogaland, Norway | 1 | 1 | 0 | 2007-09-07 | |
| Stavsjø | Innlandet, Norway | 3 | 1 | 0 | 1991-10-17 | |
| Stikla | Østfold, Norway | 1 | 1 | 0 | 1994-06-08 | |
| Stokkavatnet | Rogaland, Norway | 2 | 1 | 0 | 1995-09-05 | |
| Stokkevannet | Telemark, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Svullrya, Rotna | Innlandet, Norway | 1 | 1 | 1 | 2022-08-25 | |
| Tjennane | Telemark, Norway | 1 | 1 | 0 | 1994-05-11 | |
| tjennetjenn | Østfold, Norway | 1 | 1 | 0 | 2004-09-09 | |
| Tretjønnet | Agder, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Ulfsbakktjønn | Vestfold, Norway | 1 | 1 | 0 | 1996-09-25 | |
| Årstadtjødne | Rogaland, Norway | 1 | 1 | 0 | 1993-09-10 | |
| Årungen | Akershus, Norway | 8 | 1 | 0 | 1997-09-12 |