Xanthorhoe ferrugata (Dark-barred Twin-spot)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|
| Ivar Stormo | Østfold, Norway | 55 | 1 | 1 | 2019-08-25 |
| Øyvind Stickler | Vestfold, Norway | 32 | 1 | 19 | 2022-08-13 |
| Frode Falkenberg | Vestland, Norway | 12 | 1 | 2 | 2012-07-07 |
| John Stenersen | Nordland, Norway | 12 | 1 | 5 | 2022-05-30 |
| Even Mjaaland | Rogaland, Norway | 11 | 1 | 2 | 2017-06-16 |
| Lars Erik Johannessen | Østfold, Norway | 8 | 1 | 9 | 2015-08-23 |
| Kjell Mjølsnes | Rogaland, Norway | 8 | 1 | 1 | 2017-07-22 |
| Eli Gates | Akershus, Norway | 4 | 1 | 4 | 2017-05-06 |
| Eivind Nielsen | Rogaland, Norway | 3 | 1 | 0 | 2019-08-06 |
| Leiv Tommas Haugen | Rogaland, Norway | 3 | 1 | 0 | 2014-08-05 |
| Ole Terland | Vestland, Norway | 2 | 1 | 2 | 2023-07-20 |
| John Skartveit | Vestland, Norway | 2 | 1 | 0 | 2010-08-03 |
| Stein Rui | Vestfold, Norway | 1 | 1 | 1 | 2017-07-22 |
| Kjell Tore Vogsland | Telemark, Norway | 1 | 1 | 1 | 2006-08-08 |
| Morten A. Mjelde | Telemark, Norway | 1 | 1 | 1 | 2007-05-12 |
| John Martin Mjelde | Oslo, Norway | 1 | 1 | 1 | 2007-05-26 |
| Frank Lyngvær | Trøndelag, Norway | 1 | 1 | 0 | 2019-07-27 |
| Dag Øivind Ingierd | Akershus, Norway | 1 | 1 | 1 | 2014-05-18 |