Genus: Gerris
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Kristianborgvannet | Vestland, Norway | 1 | 1 | 0 | 1991-06-04 | |
| Kruktjønna | Trøndelag, Norway | 2 | 1 | 0 | 1991-08-28 | |
| Krussætertjern | Østfold, Norway | 1 | 1 | 0 | 1989-09-15 | |
| Kverndammen | Telemark, Norway | 1 | 1 | 0 | 1989-09-26 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1990-09-04 | |
| Laksådalsvatnet | Nordland, Norway | 2 | 1 | 0 | 1992-06-02 | |
| Langavatnet | Vestland, Norway | 1 | 1 | 0 | 1989-08-31 | |
| Langvatnet, Tromsøya | Troms, Norway | 3 | 1 | 0 | 2014-09-02 | |
| Laupen | Innlandet, Norway | 1 | 1 | 0 | 1990-09-17 | |
| Lauvtjønna | Trøndelag, Norway | 10 | 2 | 0 | 1994-09-12 | |
| Ledengstjern | Østfold, Norway | 3 | 2 | 0 | 1994-09-02 | |
| Lianvatnet | Trøndelag, Norway | 23 | 3 | 0 | 1997-09-03 | |
| Liavatnet | Vestland, Norway | 1 | 1 | 0 | 1994-09-14 | |
| Lilleåna, Haihølen | Agder, Norway | 5 | 1 | 0 | 2013-06-10 | |
| Litlevatn | Møre og Romsdal, Norway | 2 | 1 | 0 | 1997-09-05 | |
| Litlvatnet | Trøndelag, Norway | 7 | 1 | 0 | 1996-09-06 | |
| Ljøgodttjern | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 | |
| Longvatnet | Rogaland, Norway | 2 | 1 | 0 | 1990-06-01 | |
| Losby besøksgård | Akershus, Norway | 3 | 1 | 0 | 2010-06-22 | |
| Maltjern | Akershus, Norway | 3 | 2 | 0 | 1992-06-23 | |
| Mannslagervatnet | Nordland, Norway | 1 | 1 | 0 | 1989-08-30 | |
| Merkestjørna | Vestland, Norway | 2 | 1 | 0 | 1995-06-01 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1991-09-19 | |
| Moensvatnet | Vestland, Norway | 2 | 1 | 0 | 1997-10-06 | |
| Molbekktjernet | Østfold, Norway | 3 | 2 | 0 | 1992-06-01 | |
| Mosvatnet | Rogaland, Norway | 6 | 1 | 0 | 1995-09-14 | |
| Myklebustvannet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1991-06-03 | |
| Myravatnet | Vestland, Norway | 2 | 1 | 0 | 1993-09-06 | |
| Nes Verk rundt | Agder, Norway | 5 | 1 | 0 | 2024-04-08 | |
| Nitelva ved Smedstusvingen | Akershus, Norway | 4 | 1 | 0 | 2014-06-11 | |
| Nøklevatnet | Innlandet, Norway | 2 | 1 | 0 | 1992-09-02 | |
| Opsangervatnet | Vestland, Norway | 2 | 1 | 0 | 1993-06-09 | |
| Raudsjøen | Trøndelag, Norway | 3 | 1 | 0 | 1994-09-19 | |
| Reinsvolldammen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Rossevatn | Rogaland, Norway | 11 | 2 | 0 | 1993-09-20 | |
| Rundvannet | Troms, Norway | 1 | 1 | 0 | 1992-06-22 | |
| Røldalstjørnet | Vestland, Norway | 6 | 2 | 0 | 1993-06-08 | |
| Rørvatnet | Møre og Romsdal, Norway | 6 | 2 | 0 | 1995-05-14 | |
| Røyvannet | Telemark, Norway | 1 | 1 | 0 | 1993-09-10 | |
| Sagtjernet | Innlandet, Norway | 7 | 1 | 0 | 1994-10-04 | |
| Seljebøvatnet | Møre og Romsdal, Norway | 7 | 2 | 0 | 1998-03-10 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1993-05-26 | |
| Sillongen | Innlandet, Norway | 2 | 1 | 0 | 1990-09-19 | |
| Skarvatnet | Møre og Romsdal, Norway | 3 | 1 | 0 | 1995-09-07 | |
| Skithegga | Akershus, Norway | 3 | 1 | 0 | 2014-10-13 | |
| Skomakerdiket | Vestland, Norway | 1 | 1 | 0 | 2012-09-12 | |
| Skranevatnet | Vestland, Norway | 3 | 2 | 0 | 2013-05-30 | |
| Skulbruvatn | Nordland, Norway | 1 | 1 | 0 | 1997-09-12 | |
| Spildervatnet | Nordland, Norway | 1 | 1 | 0 | 1991-06-05 | |
| St. Olavskilden | Akershus, Norway | 1 | 1 | 0 | 2002-04-19 |
Sustain.no is provided by the Norwegian Centre for Science Education