Trichoptera
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Tussvatnet | Nordland, Norway | 3 | 3 | 0 | 1990-06-07 | |
| Tveitavatnet | Vestland, Norway | 4 | 4 | 0 | 1992-10-01 | |
| Tveitevannet | Vestland, Norway | 1 | 1 | 1 | 2016-06-01 | |
| Tveitevannet | Vestland, Norway | 2 | 1 | 0 | 2005-08-28 | |
| Tveitevannet | Vestland, Norway | 16 | 2 | 0 | 2011-09-09 | |
| Tverrbekken | Innlandet, Norway | 10 | 2 | 0 | 1997-09-18 | |
| Tysseelva | Vestland, Norway | 8 | 2 | 0 | 1997-09-18 | |
| Tysso | Vestland, Norway | 1 | 1 | 0 | 2007-05-11 | |
| Tømmervatnet | Troms, Norway | 2 | 1 | 0 | 1994-09-16 | |
| Ulfsbakktjønn | Vestfold, Norway | 2 | 2 | 0 | 1996-09-25 | |
| Unnebergbekken | Østfold, Norway | 16 | 2 | 0 | 1996-09-16 | |
| Urevann | Nordland, Norway | 3 | 3 | 0 | 1995-09-15 | |
| Utistubekken | Trøndelag, Norway | 8 | 2 | 0 | 1995-06-14 | |
| Utnehagen | Vestland, Norway | 1 | 1 | 1 | 2015-11-08 | |
| Vasslivatnet | Rogaland, Norway | 4 | 4 | 0 | 1992-06-04 | |
| Ved Svinndal kirke | Østfold, Norway | 1 | 1 | 0 | 2013-09-25 | |
| Vendingstjørni | Vestland, Norway | 1 | 1 | 0 | 2008-09-05 | |
| Vendingstjørni | Vestland, Norway | 1 | 1 | 0 | 2008-09-05 | |
| verkebekken | Innlandet, Norway | 1 | 1 | 0 | 2004-09-20 | |
| Vikeelva | Møre og Romsdal, Norway | 1 | 1 | 0 | 2015-06-10 | |
| Vikerauntjønna | Trøndelag, Norway | 24 | 13 | 0 | 1994-09-20 | |
| Virikbekken | Vestfold, Norway | 12 | 3 | 0 | 2004-05-10 | |
| Vollsvannet | Trøndelag, Norway | 1 | 1 | 0 | 2014-05-19 | |
| Vågdalselva | Troms, Norway | 3 | 2 | 0 | 1995-06-02 | |
| Vålåsjøen | Innlandet, Norway | 8 | 6 | 0 | 1993-06-09 | |
| Ærdalsbassenget | Agder, Norway | 2 | 2 | 0 | 2016-06-16 | |
| Øggardselva | Møre og Romsdal, Norway | 4 | 2 | 0 | 1995-05-24 | |
| Øksnevadtjørna | Rogaland, Norway | 5 | 4 | 0 | 1993-04-27 | |
| Ørnakkelva | Nordland, Norway | 1 | 1 | 0 | 1994-05-06 | |
| Ørsjøen | Innlandet, Norway | 8 | 6 | 0 | 1995-09-07 | |
| Østernvannet | Akershus, Norway | 3 | 3 | 0 | 1990-08-28 | |
| Øvre Hoelsjø | Akershus, Norway | 1 | 1 | 0 | 1994-09-12 | |
| Øvre Storfjordvatnet | Nordland, Norway | 3 | 3 | 0 | 1990-08-30 | |
| Øvsttunstemmen | Vestland, Norway | 2 | 2 | 0 | 2013-04-24 | |
| Åletjern | Telemark, Norway | 2 | 2 | 0 | 2000-06-06 | |
| Ålvatnet | Trøndelag, Norway | 4 | 1 | 0 | 2013-09-04 | |
| Årstadtjødne | Rogaland, Norway | 1 | 1 | 0 | 1993-09-10 | |
| Årungen | Akershus, Norway | 25 | 13 | 0 | 1995-09-18 | |
| Åstveitvannet | Vestland, Norway | 3 | 3 | 0 | 1991-09-27 | |
| Åstveitvannet | Vestland, Norway | 1 | 1 | 0 | 2007-06-06 |