Lesser Broad-Bordered Yellow Underwing

Noctua janthe

Noctua janthe, the lesser broad-bordered yellow underwing, is a moth of the family Noctuidae. Some authors consider Noctua janthe and Noctua janthina to be the same species. It is found in Europe and North Africa. Source

Where it is now

In the last 8 weeks this insect was recorded 51 times across 5 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 Europe ranged from 52°N in July to 62°N in August, 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.