Purple Bar

Cosmorhoe ocellata

Cosmorhoe is a monotypic genus of moth in the family Geometridae erected by Jacob Hübner in 1825. Its only species, Cosmorhoe ocellata, the purple bar, was described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. Source

Where it is now

In the last 8 weeks this insect was recorded 73 times across 6 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 46°N in May to 62°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.