Eucosma obumbratana
In 3 days ~10% in a week ~20%
Eucosma obumbratana is a moth of the family Tortricidae. It is found in Europe, China (Jilin), Russia and Kazakhstan. The wingspan is 14–20 mm. The forewings are yellow-brown, usually lighter in the posterior part. At the outer edge there are a couple of short black longitudinal lines and at the tip a small, triangular white spot. The hindwings are grey-brown. Adults are on wing from July to August. There is one generation per year.
The larvae feed on the seedheads of Sonchus arvensis, Picris hieracioides and Centaurea jacea. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
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 Two-Coloured Bell sighting in London on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1394th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Two-Coloured Bell in London on a given day, so our monthly data shows no clear season.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Two-Coloured Bell sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only London, in our data
London is the only city on Wallace's Line with enough records to rate Two-Coloured Bell sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Two-Coloured Bell is recorded against all the insects logged in London (5 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.
