Mikiola fagi
In 3 days ~40% in a week ~70%
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 Aigüestortes National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 129th most-seen of the 256 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
October
In that month about 40% of wildlife watchers report a Beech Gall Midge in Aigüestortes National Park on a given day, against under 5% in February–May and November–December, the lowest months.
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.
4th of 8
Of the 8 parks where we can rate Beech Gall Midge sightings, Aigüestortes National Park ranks 4th at about 20%. The best odds are in Plitvice Lakes National Park (Croatia, about 30%), Triglav National Park (Slovenia, about 30%) and Ordesa y Monte Perdido National Park (Spain, about 20%).
Same order: Diptera
The closest relatives of the Beech Gall Midge that you can see in Aigüestortes National Park (order Diptera, Flies) are Pellucid Hover Fly (about 30%), Common Drone Fly (about 20%) and Philipomyia aprica (about 20%), 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 Aigüestortes 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.
