Neuroterus anthracinus
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report an Oyster Gall Wasp sighting in Vancouver on a given day, based on 76 verified sightings from GBIF citizen-science data. It is the 114th most-seen of the 482 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
August to November
In those months about 10% of wildlife watchers report an Oyster Gall Wasp in Vancouver on a given day, against under 5% in December 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.
6th of 13
Of the 13 cities where we can rate Oyster Gall Wasp sightings, Vancouver ranks 6th at under 5%. The best odds are in London (United Kingdom, about 10%), Budapest (Hungary, about 10%) and Liverpool (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Oyster Gall Wasp is recorded against all the insects logged in Vancouver (76 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.
