Eudonia truncicolella
In 3 days ~20% in a week ~40%
Eudonia truncicolella is a species of moth of the family Crambidae described by Henry Tibbats Stainton in 1849. It is found in China (Hebei, Heilongjiang, Inner Mongolia, Jiangsu, Jilin, Liaoning), Japan west to Europe. The wingspan is 18–23 mm (0.71–0.91 in). The forewings are ochreous-whitish, much sprinkled with black; base blackish - marked; lines whitish, dark -edged, first irregular, second angulate -sinuate, subserrate; orbicular and claviform dot-like or rather elongate, black; discal spot 8-shaped, outlined with black; subterminal line whitish, touching second in middle. Hindwings are whitish-grey, darker terminally. The larva is dull dark brown; dorsal line blackish; spots black head dark brown; plate of 2 almost black.
The moth flies from June to October depending on the location. The larvae feed on various mosses. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 3 | Cairngorms National Park | 🇬🇧 United Kingdom |
With luck
About 10% of wildlife watchers report a Ground-Moss Grey sighting in Snowdonia National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 336th most-seen of the 387 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 to September
In those months about 10% of wildlife watchers report a Ground-Moss Grey in Snowdonia National Park on a given day, against under 5% in October to June, the lowest months.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Ground-Moss Grey sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Among the best
Of the 3 parks where we can rate Ground-Moss Grey sightings, Snowdonia National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Bavarian Forest National Park (Germany, about 10%).
Same genus: Eudonia
The closest relatives of the Ground-Moss Grey that you can see in Snowdonia National Park (genus Eudonia) are Small Grey (about 10%) and Little Grey (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Ground-Moss Grey is recorded against all the insects logged in Snowdonia National Park (5 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.
