Cynips quercusfolii
In 3 days ~50% in a week ~80%
Cynips quercusfolii, also known as the cherry gall wasp and common oak gall wasp, is a gall wasp species in the genus Cynips and family Cynipidae. The species is important for the production of commercial nutgall formed on Quercus lusitanica (the gall oak).
Galls are located on the underside of leaves, with the majority of galls being on the second and third veins from the petiole of the leaf. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Białowieża National Park | 🇵🇱 Poland | |
| 2 | Gauja National Park | 🇱🇻 Latvia | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 5 | Wadden Sea National Park | 🇩🇪 Germany | |
| 6 | Cévennes National Park | 🇫🇷 France |
Possible
About 20% of wildlife watchers report a Cherry Gall Wasp sighting in Białowieża National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 32nd most-seen of the 158 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.
November
In that month about 80% of wildlife watchers report a Cherry Gall Wasp in Białowieża National Park on a given day, against under 5% in January–February and May–August, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Cherry Gall Wasp sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 parks where we can rate Cherry Gall Wasp sightings, Białowieża National Park has the highest daily chance: about 20%. Next come Gauja National Park (Latvia, about 20%) and Bavarian Forest National Park (Germany, about 10%).
Same order: Hymenoptera
The closest relatives of the Cherry Gall Wasp that you can see in Białowieża National Park (order Hymenoptera, Ants, Bees, Wasps, and Sawflies) are Common Carder Bumble Bee (about 20%), European Hornet (about 10%) and Large Scabious Mining Bee (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cherry Gall Wasp is recorded against all the insects logged in Białowieża National Park (18 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.
