Light Emerald

Campaea margaritaria

Campaea margaritata, commonly known as the light emerald, is a moth of the family Geometridae. The species was first described by Carl Linnaeus in his 1767 12th edition of Systema Naturae. It is widely distributed throughout Europe, the Near East and North Africa. The habitat is mixed forests including parks and large gardens. Source

Where it is now

In the last 8 weeks this insect was recorded 230 times across 9 areas (each area is a 5 degree square).

See the Light Emerald on the live map

Movement and weather

Each season it is first heard regularly where daytime highs are around 18°C (typically 15 to 19°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 September, 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.