Brimstone Moth

Opisthograptis luteolata

The brimstone moth is a moth of the family Geometridae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. It should not be confused with the brimstone butterfly Gonepteryx rhamni. Source

Where it is now

In the last 8 weeks this insect was recorded 83 times across 7 areas (each area is a 5 degree square).

See the Brimstone Moth on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 16°C (typically 12 to 16°C, from 6 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 1,100 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.

Download every area as CSV

Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured and how it compares with human observers.