Ennomos quercinaria
In 3 days ~20% in a week ~40%
Ennomos quercinaria, the August thorn, is a moth of the family Geometridae. The species can be found in Europe. It was first described by Johann Siegfried Hufnagel in 1767. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an August Thorn sighting in London on a given day, based on 112 verified sightings from GBIF citizen-science data. It is the 319th most-seen of the 1504 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.
July
In that month about 20% of wildlife watchers report an August Thorn in London on a given day, against under 5% in September to June, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most August Thorn sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 7 cities where we can rate August Thorn sightings, London ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Kharkiv (Ukraine, about 10%).
Same genus: Ennomos
The closest relatives of the August Thorn that you can see in London (genus Ennomos) are Dusky Thorn (about 10%), Canary-Shouldered Thorn (about 10%) and September Thorn (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the August Thorn is recorded against all the insects logged in London (112 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.
