Beech Gall Midge

Mikiola fagi

Beech Gall Midge (Mikiola fagi)
Image: Wikipedia / Wikimedia Commons, CC BY-SA, wikipedia

Mikiola fagi, the beech gall midge is a gall-causing fly in the family Cecidomyiidae. This species was first described by Theodor Hartig in 1839. Source

Where is the Beech Gall Midge now?

In the last 8 weeks it was recorded 88 times across 9 areas (each area is a 5 degree square).

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How the Beech Gall Midge moves through the year

Over the weeks it was present in the past year, its centre in Europe ranged from 48°N in July to 58°N in October, about 1,100 km apart.

When does the Beech Gall Midge 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
Europe17 August 202617 August 202621 September 20261

Download every area as CSV · Review these arrival dates (researchers, ORCID sign-in)

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