Volucella pellucens

Volucella pellucens, the pellucid fly, is a hoverfly. Source

Where it is now

In the last 8 weeks this insect was recorded 13 times across 3 areas (each area is a 5 degree square).

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Movement and weather

Each season it is first heard regularly where daytime highs are around 19°C (typically 15 to 22°C, from 7 areas).

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.