Blotched Emerald

Comibaena bajularia

The blotched emerald is a moth of the family Geometridae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It is found throughout Europe and the Near East. It has a scattered distribution in England and Wales, but is absent from Scotland and Ireland. In the southern Alps it rises up to 1000 metres.It is mainly found in oak forests. Source

Where it is now

In the last 8 weeks this insect was recorded 4 times across 1 area (each area is a 5 degree square).

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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.