Operophtera fagata (Northern Winter Moth)
Observations/month
| Month | 1978–2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2020 | 2021 | 2022 | 2023 | 2025 | total | |
|---|
| Januar | | | | | | | | | | | | | | | | | |
| Februar | | | | | | | | | | | | | | | | | |
| Mars | | | | | | | | | | | | | | | | | |
| April | | | | | | | | | | | | | | | | | |
| Mai | | | | | | | | | | | | | | | | | |
| Juni | | | | | | | | | | | | | | | | | |
| Juli | | | | | | | | | | | | | | | | | |
| August | | | | | | | | | | | | | | | | | |
| September | 11 | 2 | 8 | 2 | | 1 | 1 | | 1 | 4 | | 1 | 1 | 2 | | 17 % | |
| Oktober | 17 | 7 | 4 | 10 | 8 | 6 | 4 | | 1 | 2 | 1 | 1 | | 3 | 3 | 34 % | |
| November | 46 | 22 | 15 | 1 | 2 | 1 | 2 | 1 | | | | | 1 | | | 47 % | |
| Desember | 3 | | | | | | | | | | | | | | | 2 % | |