Sussex Emerald
Thalera fimbrialis
Thalera fimbrialis, the Sussex emerald, is a species of moth of the family Geometridae, found in Europe and across the Palearctic to the area surrounding the Amur River in China. It was described by the Italian physician and naturalist Giovanni Antonio Scopoli in 1763. 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 Sussex Emerald 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 | 6 July 2026 | 6 July 2026 | 13 July 2026 | 1 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.