Mikiola fagi
In 3 days ~50% in a week ~80%
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. According to observations of the species aggregated on GBIF, this fly spreads across Europe. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Plitvice Lakes National Park | 🇭🇷 Croatia | |
| 2 | Triglav National Park | 🇸🇮 Slovenia | |
| 3 | Ordesa y Monte Perdido National Park | 🇪🇸 Spain | |
| 4 | Aigüestortes National Park | 🇪🇸 Spain | |
| 5 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 6 | Picos de Europa National Park | 🇪🇸 Spain | |
| 7 | Cévennes National Park | 🇫🇷 France | |
| 8 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manchester | 🇬🇧 United Kingdom | |
| 2 | Leeds | 🇬🇧 United Kingdom | |
| 3 | Copenhagen | 🇩🇰 Denmark | |
| 4 | Essen | 🇩🇪 Germany | |
| 5 | Munich | 🇩🇪 Germany | |
| 6 | Cologne | 🇩🇪 Germany | |
| 7 | Hamburg | 🇩🇪 Germany | |
| 8 | Berlin | 🇩🇪 Germany | |
| 9 | Prague | 🇨🇿 Czechia | |
| 10 | Brussels | 🇧🇪 Belgium |
Possible
About 20% of wildlife watchers report a Beech Gall Midge sighting in Ordesa y Monte Perdido National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 30th most-seen of the 79 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
June to September
In those months about 20% of wildlife watchers report a Beech Gall Midge in Ordesa y Monte Perdido National Park on a given day, against under 5% in April–May and October–November, the lowest months. January has too few records to rate.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Beech Gall Midge sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 8
Of the 8 parks where we can rate Beech Gall Midge sightings, Ordesa y Monte Perdido National Park ranks 3rd at about 20%. The best odds are in Plitvice Lakes National Park (Croatia, about 30%) and Triglav National Park (Slovenia, about 30%).
Same order: Diptera
The closest relatives of the Beech Gall Midge that you can see in Ordesa y Monte Perdido National Park (order Diptera, Flies) are Common Drone Fly (about 20%), Tapered Drone Fly (about 10%) and Hornet Mimic Hover Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Beech Gall Midge is recorded against all the insects logged in Ordesa y Monte Perdido National Park (10 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
