Euthrix potatoria
In 3 days ~80% in a week >90%
Euthrix potatoria, the drinker, is an orange-brown moth of the family Lasiocampidae. The species' common and scientific names derive from the larva's supposed drinking of drops of dew. The scientific name Euthryx potatoria was given to this moth by Carl Linnaeus in 1758. In choosing the name potatoria 'drinker-like', he was inspired by the Dutch entomologist Johannes Goedaert, who had called the animal dronckaerdt 'drunkard' "because it is very much inclined to drinking". This remark refers to the moth's habit of repeatedly plunging its head into the water. The English name drinker (moth) also refers to Goedaert's analogy.
The imago has a wingspan of 4.5–6.5 cm (1.8–2.6 in). The yellowish females are slightly larger than... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Biebrza National Park | 🇵🇱 Poland | |
| 3 | Białowieża National Park | 🇵🇱 Poland | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany | |
| 5 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Manchester | 🇬🇧 United Kingdom | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | Copenhagen | 🇩🇰 Denmark | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Nizhny Novgorod | 🇷🇺 Russia | |
| 6 | Paris | 🇫🇷 France | |
| 7 | Moscow | 🇷🇺 Russia | |
| 8 | Vienna | 🇦🇹 Austria | |
| 9 | Saint Petersburg | 🇷🇺 Russia |
Likely
About 40% of wildlife watchers report a Drinker Moth sighting in Biebrza National Park on a given day, based on 27 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 4th most-seen of the 97 insects we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
June
In that month about 60% of wildlife watchers report a Drinker Moth in Biebrza National Park on a given day, against under 5% in March–April and August–September, the lowest months. December has too few records to rate.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Drinker Moth sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 5
Of the 5 parks where we can rate Drinker Moth sightings, Biebrza National Park ranks 2nd at about 40%. The best odds are in Snowdonia National Park (United Kingdom, about 50%). All parks ranked.
Same family: Lasiocampidae
The closest relatives of the Drinker Moth that you can see in Biebrza National Park (family Lasiocampidae, Lappet Moths) are Fox Moth (about 30%) and Oak Eggar (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Drinker Moth is recorded against all the insects logged in Biebrza National Park (27 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.
