Acleris umbrana
In 3 days ~10% in a week ~20%
Acleris umbrana is a species of moth of the family Tortricidae. It is found in Great Britain, France, Belgium, Germany, Austria, Switzerland, Italy, the Czech Republic, Slovakia, Poland, Hungary, Norway, Sweden, Finland, the Baltic region and Russia. In the east, the range extends to Japan. The habitat consists of woodland, fens and marshes.
The wingspan is 18–23 mm. Adults are on wing in one generation from July and August to late October and, after overwintering, from late February to early May. The larvae feed on Sorbus aucuparia, Alnus glutinosa, Cornus sanguinea, Salix caprea, Prunus spinosa, Prunus avium, Crataegus and Carpinus species. They feed within spun leaves of their host plant. Larvae can be found in June and July. The species overwinters as an adult. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Dark-Streaked Button sighting in London on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 1153rd most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
November
In that month about 10% of wildlife watchers report a Dark-Streaked Button in London on a given day, against under 5% in December to October, the lowest months.
Only London, in our data
London is the only city on Wallace's Line with enough records to rate Dark-Streaked Button sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Acleris
The closest relatives of the Dark-Streaked Button that you can see in London (genus Acleris) are Garden Rose Tortrix (about 10%) and Maple Leaftier Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dark-Streaked Button is recorded against all the insects logged in London (8 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.
