Eudonia delunella
In 3 days ~30% in a week ~60%
Eudonia delunella is a species of moth of the family Crambidae. It was described by Henry Tibbats Stainton in 1849 and is found in Europe. The wingspan is 17–18 mm (0.67–0.71 in). The forewings are white, irregularly blackish-mixed with a black triangular mark from base of costa; lines white, dark-edged, first irregular, second strongly sinuate; an irregular blackish costal blotch beyond first including orbicular and claviform, and a quadrate blotch before second concealing discal spot; terminal area blackish, subterminal line white, touching second in middle. Hindwings are light grey, darker terminally; a darker discal mark. The larva is greenish-yellow; spots, head, and plate of 2 dark bronzy -brown.
The moth flies from June to September depending on the location. The larvae feed on various mosses and lichen. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 3 | Pyrénées National Park | 🇫🇷 France | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Pied Grey sighting in Cévennes National Park on a given day, based on 71 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 142nd most-seen of the 996 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
May
In that month about 30% of wildlife watchers report a Pied Grey in Cévennes National Park on a given day, against under 5% in July to April, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Pied Grey sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 4 parks where we can rate Pied Grey sightings, Cévennes National Park has the highest daily chance: about 10%. Next come Sierra de Guadarrama National Park (Spain, about 10%) and Pyrénées National Park (France, under 5%).
Same genus: Eudonia
The closest relatives of the Pied Grey that you can see in Cévennes National Park (genus Eudonia) are Small Grey (about 10%), Narrow-Winged 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 Pied Grey is recorded against all the insects logged in Cévennes National Park (71 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.
