Common Ringlet

Coenonympha california

Coenonympha california, also known as the California ringlet or common ringlet, is a species of butterfly native to North America. Although it has previously been considered a subspecies of Coenonympha tullia, genetic testing suggests it is a separate species. Source

Where it is now

In the last 8 weeks this insect was recorded 6 times across 2 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 North America ranged from 38°N in March to 48°N in July, about 1,100 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.