Epirrhoe alternata
In 3 days ~20% in a week ~40%
The common carpet or white-banded toothed carpet (Epirrhoe alternata) is a moth of the family Geometridae. The species was first described by Otto Friedrich Müller in 1764. It is found throughout the Palearctic and the Near East. In North America it ranges across the northern tier of the United States plus every province and territory of Canada. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Aigüestortes National Park | 🇪🇸 Spain | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany | |
| 5 | Białowieża National Park | 🇵🇱 Poland | |
| 6 | Triglav National Park | 🇸🇮 Slovenia | |
| 7 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 8 | Pyrénées National Park | 🇫🇷 France | |
| 9 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 10 | Cévennes National Park | 🇫🇷 France | |
| 11 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Helsinki | 🇫🇮 Finland | |
| 3 | Berlin | 🇩🇪 Germany | |
| 4 | Prague | 🇨🇿 Czechia | |
| 5 | Manchester | 🇬🇧 United Kingdom | |
| 6 | London | 🇬🇧 United Kingdom | |
| 7 | Porto | 🇵🇹 Portugal | |
| 8 | Birmingham | 🇬🇧 United Kingdom | |
| 9 | Nizhny Novgorod | 🇷🇺 Russia | |
| 10 | Hamburg | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Common Carpet Moth sighting in Porto on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 158th most-seen of the 498 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.
April–August and October–November
In those months about 10% of wildlife watchers report a Common Carpet Moth in Porto on a given day, against under 5% in September and December–March, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Common Carpet Moth sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
7th of 28
Of the 28 cities where we can rate Common Carpet Moth sightings, Porto ranks 7th at about 10%. The best odds are in Liverpool (United Kingdom, about 20%), Helsinki (Finland, about 10%) and Berlin (Germany, about 10%).
Same family: Geometridae
The closest relatives of the Common Carpet Moth that you can see in Porto (family Geometridae, Geometer Moths) are Double-Striped Pug (about 20%), Vestal (about 20%) and Pale Oak Beauty (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Carpet Moth is recorded against all the insects logged in Porto (39 verified sightings), 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.
