Pale Oak Beauty

Hypomecis punctinalis

Hypomecis punctinalis, the pale oak beauty, is a moth of the family Geometridae. The species was first described by Giovanni Antonio Scopoli in his 1763 Entomologia Carniolica. The species can be found in central and southern Europe, Asia Minor, Transcaucasia, Russia, the Russian Far East, Japan, Korea, Ussuri and western China. Source

Where it is now

In the last 8 weeks this insect was recorded 2 times across 2 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 6 areas). That holds across 20° 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 44°N in April to 59°N in June, about 1,600 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.