Square-spot Rustic

Xestia xanthographa

The square-spot rustic is a moth of the family Noctuidae. It is found in Europe, North Africa and east across the Palearctic and in North America. Source

Where it is now

In the last 8 weeks this insect was recorded 1,632 times across 23 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 22°C (typically 20 to 26°C, from 8 areas). That holds across 20° of latitude, which suggests its timing follows temperature more than the calendar.

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.