Grey Mountain Carpet

Entephria caesiata

Entephria caesiata, the grey mountain carpet, is a moth of the family Geometridae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It is found in the mountainous areas of Europe, the Caucasus, Asia Minor, Armenia, Russia, Russian Far East, Siberia, northern Mongolia, Sakhalin and Honshū in Japan. Source

Where it is now

In the last 8 weeks this insect was recorded 21 times across 3 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 54°N in July to 66°N in July, about 1,400 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.