Eucosma campoliliana
In 3 days ~20% in a week ~50%
Eucosma campoliliana is a moth of the family Tortricidae. It is found in Europe, China (Jilin, Heilongjiang), Japan and Russia. The wingspan is 13–18 mm. The head is adorned with white hairs, while the thorax is black with white spots on the sides. The ground colour of the forewings is snow white, with an interrupted, light brown cross-band in the middle and the wing tip mostly brown. There are areas with small black spots at the base and in the outer part of the wing. The hindwings are light grey-brown.
The moth flies from June to August in western Europe. The larvae feed on Jacobaea vulgaris and Tephroseris species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Marbled Bell sighting in Wadden Sea National Park on a given day, based on 49 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 139th most-seen of the 818 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Marbled 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 Marbled Bell sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 2 parks where we can rate Marbled Bell sightings, Wadden Sea National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Marbled Bell is recorded against all the insects logged in Wadden Sea National Park (49 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.
