Crescent
Helotropha leucostigma
Helotropha leucostigma, the crescent, formerly Celaena leucostigma is a moth of the family Noctuidae. It is found in the Palearctic realm. Source
Where it is now
In the last 8 weeks this insect was recorded 102 times across 7 areas (each area is a 5 degree square).
See the Crescent 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 | 13 July 2026 | 20 July 2026 | 17 August 2026 | 2 |
Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.