Maple Button

Acleris forsskaleana

Acleris forsskaleana, the maple leaftier moth, is a moth of the family Tortricidae. It is found in Europe and North America in woodlands and gardens. Source

Where it is now

In the last 8 weeks this insect was recorded 15 times across 4 areas (each area is a 5 degree square).

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Movement and weather

Over the weeks it was present in the past year, its centre in Europe ranged from 50°N in June to 62°N in August, about 1,400 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.