Hydriomena
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|
| Frode Falkenberg | Vestland, Norway | 358 | 3 | 12 | 2022-07-31 |
| Svein Sellevold Bekkum | Nordland, Norway | 228 | 3 | 28 | 2023-09-03 |
| Olav Krogsæter | Vestland, Norway | 174 | 3 | 21 | 2015-09-28 |
| Even Mjaaland | Rogaland, Norway | 145 | 3 | 5 | 2017-07-23 |
| Alf Tore Mjøs | Rogaland, Norway | 144 | 3 | 15 | 2023-08-13 |
| John Skartveit | Vestland, Norway | 133 | 3 | 20 | 2024-05-29 |
| Kjell Mjølsnes | Rogaland, Norway | 105 | 3 | 3 | 2017-07-26 |
| Eivind Nielsen | Rogaland, Norway | 99 | 2 | 3 | 2023-06-12 |
| Michael Fredriksen | Vestland, Norway | 96 | 1 | 21 | 2016-08-04 |
| Nils Rogn | Innlandet, Norway | 88 | 3 | 18 | 2023-06-27 |
| Leiv Tommas Haugen | Rogaland, Norway | 67 | 3 | 0 | 2023-08-26 |
| Christer Kamsvåg | Møre og Romsdal, Norway | 54 | 2 | 0 | 2018-05-29 |
| Anders Lundberg | Vestland, Norway | 48 | 2 | 6 | 2019-07-26 |
| Ivar Stormo | Østfold, Norway | 45 | 3 | 7 | 2019-08-25 |
| Dag O. Bollingmo | Trøndelag, Norway | 40 | 3 | 12 | 2017-06-13 |
| John Stenersen | Nordland, Norway | 36 | 2 | 33 | 2023-09-02 |
| Turid og Jarle Bakken | Møre og Romsdal, Norway | 28 | 2 | 13 | 2024-05-03 |
| Ola Moen | Vestland, Norway | 27 | 2 | 6 | 2017-05-16 |
| Rune Voie | Vestland, Norway | 25 | 1 | 1 | 2011-08-12 |
| Egil Frantzen | Vestland, Norway | 20 | 1 | 2 | 2010-08-06 |
| Geirr O Pedersen | Akershus, Norway | 19 | 2 | 0 | 2011-08-13 |
| Sveinung Sigbjørnsen | Vestland, Norway | 17 | 3 | 7 | 2021-05-14 |
| Øyvind Stickler | Vestfold, Norway | 16 | 1 | 6 | 2022-08-04 |
| Sissel og Nigel Goodgame | Vestland, Norway | 16 | 1 | 7 | 2013-07-26 |
| Dag Øivind Ingierd | Akershus, Norway | 9 | 2 | 9 | 2014-05-20 |
| Fredrik Birkeland | Rogaland, Norway | 9 | 1 | 2 | 2015-08-25 |
| John Grønning | Rogaland, Norway | 8 | 2 | 3 | 2016-08-17 |
| Pål Mølnvik | Trøndelag, Norway | 8 | 2 | 4 | 2022-08-26 |
| Lars-Henrik Jensen | Vestland, Norway | 8 | 1 | 7 | 2013-08-12 |
| John Martin Mjelde | Oslo, Norway | 6 | 2 | 3 | 2007-06-21 |
| Trond Einar Brobakk | Trøndelag, Norway | 5 | 1 | 3 | 2012-08-12 |
| Marte Falkenberg | Vestland, Norway | 5 | 1 | 0 | 2010-07-29 |
| Olav Julsrud | Oslo, Norway | 5 | 1 | 5 | 2011-08-03 |
| Frank Lyngvær | Trøndelag, Norway | 3 | 2 | 2 | 2024-05-01 |
| Lars Erik Johannessen | Østfold, Norway | 3 | 1 | 2 | 2009-08-07 |
| Kjell Tore Vogsland | Telemark, Norway | 3 | 3 | 3 | 2011-05-13 |
| Arild Breistøl | Vestland, Norway | 3 | 1 | 0 | 2009-09-04 |
| Bjørn Pettersen | Innlandet, Norway | 2 | 2 | 1 | 2012-07-23 |
| Geir Birkeland | Oslo, Norway | 1 | 1 | 0 | 2013-08-20 |
| Stein Rui | Vestfold, Norway | 1 | 1 | 1 | 2018-07-08 |
| Bjørn M Andersen | Nordland, Norway | 1 | 1 | 1 | 2014-09-03 |
| Peter Forseth | Trøndelag, Norway | 1 | 1 | 0 | 2020-07-26 |
| Hildegunn B Sørstrand | Møre og Romsdal, Norway | 1 | 1 | 0 | 2014-05-31 |
| Roger Oseid | Innlandet, Norway | 1 | 1 | 1 | 2010-09-10 |
| Odd Hallaråker | Vestland, Norway | 1 | 1 | 1 | 2008-05-19 |
| Morten A. Mjelde | Telemark, Norway | 1 | 1 | 0 | 2007-05-12 |
| Truls Lerdahl | Vestland, Norway | 1 | 1 | 1 | 2016-05-29 |