Little Thorn
Cepphis advenaria
Cepphis advenaria, the little thorn, is a moth of the family Geometridae. The species can be found in Europe and across the Palearctic to Japan. 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 Little Thorn 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 | 18 May 2026 | 1 June 2026 | 3 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.