Neuroterus anthracinus
In 3 days ~20% in a week ~40%
Neuroterus anthracinus is a widely distributed gall wasp that forms chemically induced leaf galls on oak trees. N. anthracinus has both sexual and agamic generations and in consequence forms two distinct galls, the oyster gall and April-bud gall. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom | |
| 2 | Budapest | 🇭🇺 Hungary | |
| 3 | Liverpool | 🇬🇧 United Kingdom | |
| 4 | Vienna | 🇦🇹 Austria | |
| 5 | Birmingham | 🇬🇧 United Kingdom | |
| 6 | Vancouver | 🇨🇦 Canada | |
| 7 | Manchester | 🇬🇧 United Kingdom | |
| 8 | Helsinki | 🇫🇮 Finland | |
| 9 | Paris | 🇫🇷 France | |
| 10 | Prague | 🇨🇿 Czechia |
With luck
About 10% of wildlife watchers report an Oyster Gall Wasp sighting in Budapest on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 195th most-seen of the 404 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
October and November
In those months about 20% of wildlife watchers report an Oyster Gall Wasp in Budapest on a given day, against under 5% in January to July, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Oyster Gall Wasp sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 13 cities where we can rate Oyster Gall Wasp sightings, Budapest ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in London (United Kingdom, about 10%).
Same family: Cynipidae
The closest relatives of the Oyster Gall Wasp that you can see in Budapest (family Cynipidae, Gall Wasps) are Knopper Gall Wasp (about 10%), Mossy Rose Gall Wasp (about 10%) and Cherry Gall Wasp (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Oyster Gall Wasp is recorded against all the insects logged in Budapest (13 verified sightings), 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.
