Oak Eggar

Lasiocampa quercus

The oak eggar is a common moth of the family Lasiocampidae found in Europe and northern and western parts of Asia. It feeds on a variety of plant species, and may develop over two years in higher latitudes, where it may be known as the northern eggar. Its specific name quercus refers to the fact that its cocoon generally resembles an acorn, not that its primary food source is oak. 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

Over the weeks it was present in the past year, its centre in Europe ranged from 45°N in July to 60°N in June, about 1,700 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.