Single-dotted Wave

Idaea dimidiata

Idaea dimidiata, the single-dotted wave, is a moth of the family Geometridae. It is a Holarctic species. Source

Where it is now

In the last 8 weeks this insect was recorded 18 times across 3 areas (each area is a 5 degree square).

See the Single-dotted Wave on the live map

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.