European oak leafroller
Tortrix viridana
The green oak tortrix, Tortrix viridana, also known as the European oak leafroller and the green oak moth, is a distinctive green moth whose larvae feed on tree leaves, especially oak. The head, forebody and front wings are green, the hind wings lightly greyish. The wingspan is 18-24 millimetres. Source
Where it is now
No records in the last 8 weeks. It may be out of season where the observers and sensors are.
See the European oak leafroller on the live map
Arrival dates
The week it was first heard regularly in each region, after at least six weeks away. Dates differ from south to north, so a region has a range.
| Region | First arrival | Last arrival | Typical peak | Areas |
|---|---|---|---|---|
| Europe | 18 May 2026 | 15 June 2026 | 25 May 2026 | 4 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.