Genus: Staurodesmus
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Abbortjernet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-22 | |
| Arkavatnet | Rogaland, Norway | 5 | 3 | 0 | 1994-09-12 | |
| Bergvikvatnet | Nordland, Norway | 1 | 1 | 0 | 1994-09-13 | |
| Burudvann | Akershus, Norway | 1 | 1 | 0 | 1991-09-12 | |
| Elgtjern | Trøndelag, Norway | 2 | 1 | 0 | 1990-05-25 | |
| Gravdalsvatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-18 | |
| Holdalsvatn | Nordland, Norway | 1 | 1 | 0 | 1994-09-05 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-29 | |
| Kolbjørnviksjøen | Østfold, Norway | 3 | 1 | 0 | 1991-09-05 | |
| Korssjøen | Vestfold, Norway | 1 | 1 | 0 | 1994-09-05 | |
| Laksådalsvatnet | Nordland, Norway | 1 | 1 | 0 | 1990-06-11 | |
| Laupen | Innlandet, Norway | 1 | 1 | 0 | 1989-09-27 | |
| Lauvtjønna | Trøndelag, Norway | 1 | 1 | 0 | 1993-06-11 | |
| Lianvatnet | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-04 | |
| Litlevatn | Møre og Romsdal, Norway | 2 | 1 | 0 | 1994-09-07 | |
| Myklebustvannet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-25 | |
| Nøklevann | Oslo, Norway | 3 | 2 | 0 | 1990-06-05 | |
| Raudsjøen | Trøndelag, Norway | 2 | 1 | 0 | 1990-08-31 | |
| Reiarsvatnet | Rogaland, Norway | 3 | 2 | 0 | 1991-09-16 | |
| Rossevatn | Rogaland, Norway | 3 | 2 | 0 | 1991-09-17 | |
| Røldalstjørnet | Vestland, Norway | 2 | 2 | 0 | 1989-09-14 | |
| Sagtjernet | Innlandet, Norway | 1 | 1 | 0 | 1989-09-20 | |
| Sundkilen | Telemark, Norway | 2 | 2 | 0 | 1990-06-01 | |
| Svartaholtjørnet | Vestland, Norway | 1 | 1 | 0 | 1996-09-17 | |
| Svartåstjern | Buskerud, Norway | 1 | 1 | 0 | 1993-06-03 | |
| Tornesvatnet | Rogaland, Norway | 2 | 1 | 0 | 1991-05-30 | |
| Tretjønnet | Agder, Norway | 1 | 1 | 0 | 1990-06-26 | |
| Tveitevannet | Vestland, Norway | 1 | 1 | 0 | 1989-09-07 | |
| Tømmervatnet | Troms, Norway | 1 | 1 | 0 | 1994-09-16 | |
| Ulfsbakktjønn | Vestfold, Norway | 2 | 2 | 0 | 1996-09-25 | |
| Årstadtjødne | Rogaland, Norway | 1 | 1 | 0 | 1994-09-22 | |