Silver-washed Fritillary

Argynnis paphia

The silver-washed fritillary is a common and variable butterfly found over much of the Palearctic realm – Algeria, Europe and across the Palearctic to Japan. Source

Where it is now

In the last 8 weeks this insect was recorded 58 times across 8 areas (each area is a 5 degree square).

See the Silver-washed Fritillary on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 25°C (typically 20 to 29°C, from 10 areas).

Over the weeks it was present in the past year, its centre in Europe ranged from 45°N in June to 55°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.