European Fan-foot

Herminia tarsipennalis

Zanclognatha tarsipennalis, the fan-foot, is a species of litter moth of the family Erebidae. It is found in Europe and east across the Palearctic to Siberia, Amur, Ussuri, Japan, Taiwan, Korea and China. Source

Where it is now

In the last 8 weeks this insect was recorded 3 times across 1 area (each area is a 5 degree square).

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Movement and weather

Each season it is first heard regularly where daytime highs are around 17°C (typically 17 to 19°C, from 5 areas). That holds across 15° 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 54°N in June to 63°N in August, about 1,000 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.