Ram's Horn Gall Wasp

Andricus aries

Ram's Horn Gall Wasp (Andricus aries)
Image: Wikipedia / Wikimedia Commons, CC BY-SA, wikipedia

Andricus aries is a species of gall-forming wasps, in the genus Andricus. The species was named by the French entomologist Joseph-Étienne Giraud, in 1859. It is commonly found in eastern Europe and during the 21st century has spread to western Europe. Source

Where is the Ram's Horn Gall Wasp now?

In the last 8 weeks it was recorded 4 times in one area (a 5 degree square).

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When does the Ram's Horn Gall Wasp arrive?

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.

RegionFirst arrivalLast arrivalTypical peakAreas
Europe7 September 20267 September 20267 September 20261

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Arriving at the same time in Europe

Every arrival in Europe, month by month

Figures are effort corrected and come from automatic sound identification, which makes mistakes. How this is measured · How it compares with human observers