Eudonia lacustrata
In 3 days ~30% in a week ~60%
Eudonia lacustrata is a species of moth of the family Crambidae described by Georg Wolfgang Franz Panzer in 1804. It is found in Europe, north-west Africa, Asia from Turkey, Iran and Syria to Siberia and the western part of China (Hunan). The subspecies E. lacustrata persica is found in Iran and Armenia.
The wingspan is 16–18 mm (0.63–0.71 in). Forewings whitish, sometimes mixed with light ochreous-yellowish, sprinkled with black; base black-marked; lines whitish, blackish-edged, first irregular, second rather sinuate; orbicular and claviform dot-like, black; a black X-shaped discal mark; terminal area grey mixed with black, subterminal line white, interrupted in middle. Hindwings whitish-grey, darker terminally.
Larva yellowish-green; spots brownish-green; head and plate of 2 black-brown: on mosses; 3, 4. The moth flies from May to August depending on the location. The larvae feed on various mosses. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mercantour National Park | 🇫🇷 France | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 4 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 5 | Cévennes National Park | 🇫🇷 France | |
| 6 | Pyrénées National Park | 🇫🇷 France | |
| 7 | Wadden Sea National Park | 🇩🇪 Germany | |
| 8 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Manchester | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Helsinki | 🇫🇮 Finland | |
| 6 | Leeds | 🇬🇧 United Kingdom | |
| 7 | Budapest | 🇭🇺 Hungary | |
| 8 | Essen | 🇩🇪 Germany | |
| 9 | Brussels | 🇧🇪 Belgium | |
| 10 | Munich | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Little Grey sighting in Mercantour National Park on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 221st most-seen of the 412 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.
July
In that month about 20% of wildlife watchers report a Little Grey in Mercantour National Park on a given day, against under 5% in October to May, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Little Grey 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 8 parks where we can rate Little Grey sightings, Mercantour National Park has the highest daily chance: about 10%. Next come Bavarian Forest National Park (Germany, about 10%) and Snowdonia National Park (United Kingdom, about 10%).
GBIF citizen-science records
It is estimated from how often the Little Grey is recorded against all the insects logged in Mercantour National Park (23 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.
