Flame Shoulder

Ochropleura plecta

The flame shoulder is a moth of the family Noctuidae. The species was first described by Carl Linnaeus in 1761. It is distributed throughout the Palearctic from Ireland in the west to Siberia then Korea and Japan in the east. Source

Where it is now

In the last 8 weeks this insect was recorded 54 times across 7 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 14°C (typically 12 to 17°C, from 7 areas). That holds across 15° of latitude, which suggests its timing follows temperature more than the calendar.

Over the weeks it was present in the past year, its centre in Europe ranged from 48°N in May to 58°N in June, about 1,000 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.