Genus: Closterium
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Arkavatnet | Rogaland, Norway | 2 | 1 | 0 | 1994-09-12 | |
| Elgtjern | Trøndelag, Norway | 2 | 1 | 0 | 1990-05-25 | |
| Erlevegen 37 | Agder, Norway | 2 | 1 | 0 | 1991-05-29 | |
| Fetvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1990-09-18 | |
| Frøylandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1994-09-28 | |
| Grindheimsvatnet | Agder, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Gåstjønna | Nordland, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Hammervatnet | Trøndelag, Norway | 3 | 1 | 0 | 1994-06-18 | |
| Harestuvannet | Akershus, Norway | 1 | 1 | 0 | 2005-08-30 | |
| Husavatnet | Vestland, Norway | 3 | 1 | 0 | 1991-09-17 | |
| Ibestadvatnet | Troms, Norway | 2 | 2 | 0 | 1990-09-11 | |
| Kolbotnvannet | Akershus, Norway | 5 | 3 | 0 | 1991-06-03 | |
| Kvitblikkvannet | Nordland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Langavatnet | Vestland, Norway | 1 | 1 | 0 | 1989-08-31 | |
| Liavatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-19 | |
| Litlvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1996-09-06 | |
| Ljøgodttjern | Akershus, Norway | 1 | 1 | 0 | 1993-08-30 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1992-09-23 | |
| Myklavatnet | Vestland, Norway | 1 | 1 | 0 | 1993-09-14 | |
| Myklebustvannet | Møre og Romsdal, Norway | 5 | 3 | 0 | 1991-06-03 | |
| Myravatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Nøklevann | Oslo, Norway | 1 | 1 | 0 | 1989-09-15 | |
| Nøklevatnet | Innlandet, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Raudsjøen | Trøndelag, Norway | 3 | 2 | 0 | 1990-08-31 | |
| Rundvannet | Troms, Norway | 1 | 1 | 0 | 1994-09-10 | |
| Røldalstjørnet | Vestland, Norway | 2 | 1 | 0 | 1990-06-11 | |
| Rørvatnet | Møre og Romsdal, Norway | 4 | 3 | 0 | 1993-06-19 | |
| Sagtjernet | Innlandet, Norway | 1 | 1 | 0 | 1989-09-20 | |
| Skjelbreidvatnet | Vestland, Norway | 2 | 2 | 0 | 1991-06-06 | |
| Spildervatnet | Nordland, Norway | 6 | 3 | 0 | 1993-06-11 | |
| Stavsjø | Innlandet, Norway | 1 | 1 | 0 | 1990-05-28 | |
| Stordammen | Akershus, Norway | 1 | 1 | 0 | 1989-09-08 | |
| Svartaholtjørnet | Vestland, Norway | 3 | 2 | 0 | 1993-09-17 | |
| Svartåstjern | Buskerud, Norway | 3 | 2 | 0 | 1993-06-03 | |
| Tornesvatnet | Rogaland, Norway | 3 | 2 | 0 | 1991-05-30 | |
| Tretjønnet | Agder, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Trytetjønnet | Buskerud, Norway | 2 | 1 | 0 | 1990-09-26 | |
| Vasslivatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-10-04 | |
| Vålåsjøen | Innlandet, Norway | 1 | 1 | 0 | 1989-08-24 | |
| Øksnevadtjørna | Rogaland, Norway | 1 | 1 | 0 | 1991-09-15 | |
| Ørsjøen | Innlandet, Norway | 1 | 1 | 0 | 1994-09-22 | |
| Østernvannet | Akershus, Norway | 2 | 1 | 0 | 1990-08-28 | |
| Øvre Storfjordvatnet | Nordland, Norway | 2 | 1 | 0 | 1990-05-29 | |
| Årstadtjødne | Rogaland, Norway | 1 | 1 | 0 | 1994-09-22 | |