Nut-tree Tussock

Colocasia coryli

Colocasia coryli is a moth of the family Noctuidae. It is found in Europe and Asia. In the north of its range, the distribution area includes northern Scandinavia, while in the south the moth is limited to montane areas of western and northern Spain, Sicily, Greece, Romania and Asia minor. To the east, the range extends across the Palearctic to Lake Baikal. In the Alps it is found at elevations up to 1600 m. Source

Where it is now

No records in the last 8 weeks. It may be out of season where the observers and sensors are.

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Movement and weather

Each season it is first heard regularly where daytime highs are around 14°C (typically 12 to 15°C, from 6 areas). That holds across 20° of latitude, which suggests its timing follows temperature more than the calendar.

Over the weeks it was present in the past year, its centre in Europe ranged from 43°N in June to 60°N in June, about 1,900 km apart.

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.

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Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.