Dark Marbled Carpet

Dysstroma citrata

Dysstroma citrata, the dark marbled carpet or northern marbled carpet, is a moth of the family Geometridae. The species was first described by Carl Linnaeus in 1761. It is found across the Holarctic ecozone and has been reported from India. Source

Where it is now

In the last 8 weeks this insect was recorded 763 times across 11 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 19°C (typically 16 to 19°C, from 5 areas).

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.