Tethea or (Poplar Lutestring)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|
| Ivar Stormo | Østfold, Norway | 41 | 1 | 1 | 2019-08-04 |
| Even Mjaaland | Rogaland, Norway | 38 | 1 | 3 | 2017-07-23 |
| Svein Sellevold Bekkum | Nordland, Norway | 35 | 1 | 4 | 2013-06-22 |
| Frode Falkenberg | Vestland, Norway | 29 | 1 | 10 | 2020-06-27 |
| Kjell Mjølsnes | Rogaland, Norway | 26 | 1 | 1 | 2017-07-22 |
| Dag Øivind Ingierd | Akershus, Norway | 22 | 1 | 19 | 2014-05-19 |
| Nils Rogn | Innlandet, Norway | 10 | 1 | 8 | 2023-06-29 |
| Eivind Nielsen | Rogaland, Norway | 8 | 1 | 4 | 2022-07-08 |
| Olav Krogsæter | Vestland, Norway | 8 | 1 | 4 | 2014-06-17 |
| Øyvind Stickler | Vestfold, Norway | 6 | 1 | 5 | 2022-06-22 |
| Leiv Tommas Haugen | Rogaland, Norway | 6 | 1 | 1 | 2023-06-12 |
| Anders Lundberg | Vestland, Norway | 4 | 1 | 5 | 2016-06-24 |
| Egil Frantzen | Vestland, Norway | 4 | 1 | 2 | 2008-07-01 |
| John Grønning | Rogaland, Norway | 4 | 1 | 1 | 2010-06-30 |
| Alf Tore Mjøs | Rogaland, Norway | 4 | 1 | 4 | 2021-07-13 |
| Rune Voie | Vestland, Norway | 3 | 1 | 0 | 2012-07-04 |
| John Skartveit | Vestland, Norway | 2 | 1 | 1 | 2014-05-31 |
| Lars Erik Johannessen | Østfold, Norway | 1 | 1 | 1 | 2010-06-05 |
| Sissel og Nigel Goodgame | Vestland, Norway | 1 | 1 | 1 | 2012-06-25 |
| John Stenersen | Nordland, Norway | 1 | 1 | 0 | 2016-06-05 |
| Olav Julsrud | Oslo, Norway | 1 | 1 | 1 | 2011-06-14 |
| Kjell Tore Vogsland | Telemark, Norway | 1 | 1 | 1 | 2006-06-19 |
| Sveinung Sigbjørnsen | Vestland, Norway | 1 | 1 | 0 | 2017-08-03 |