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 Wadden Sea National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 536th most-seen of the 818 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.
July and August
In those months about 10% of wildlife watchers report a Two-Coloured Bell in Wadden Sea National Park on a given day, against under 5% in September to June, the lowest months.
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 Wadden Sea National Park, in our data
Wadden Sea National Park is the only park 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 Wadden Sea National Park (8 verified sightings from 2019 to 2026), 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.
