Scopula immorata
In 3 days ~50% in a week ~80%
Scopula immorata, the Lewes wave, is a moth of the family Geometridae. It is found throughout Europe and the Near East. The wingspan is 20–27 millimetres (0.79–1.06 in). The moth flies in two generations from the end of June to mid August in western Europe.
The larva feeds on various low-growing plants like thyme and oregano. Mating occurs from the males seeking out females in simple courtship behavior, taking place at ~6-10am for an hour to an hour and a half. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Biebrza National Park | 🇵🇱 Poland | |
| 2 | Vanoise National Park | 🇫🇷 France | |
| 3 | Mercantour National Park | 🇫🇷 France | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 5 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nizhny Novgorod | 🇷🇺 Russia | |
| 2 | Berlin | 🇩🇪 Germany | |
| 3 | Prague | 🇨🇿 Czechia | |
| 4 | Helsinki | 🇫🇮 Finland | |
| 5 | Vienna | 🇦🇹 Austria | |
| 6 | Moscow | 🇷🇺 Russia | |
| 7 | Saint Petersburg | 🇷🇺 Russia |
Possible
About 20% of wildlife watchers report a Lewes Wave sighting in Biebrza National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 40th most-seen of the 97 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
October
In that month about 50% of wildlife watchers report a Lewes Wave in Biebrza National Park on a given day, against under 5% in June and September, the lowest months. December has too few records to rate.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Lewes Wave sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 5 parks where we can rate Lewes Wave sightings, Biebrza National Park has the highest daily chance: about 20%. Next come Vanoise National Park (France, about 20%) and Mercantour National Park (France, about 10%).
Same family: Geometridae
The closest relatives of the Lewes Wave that you can see in Biebrza National Park (family Geometridae, Geometer Moths) are Latticed Heath (about 30%), Common Heath (about 20%) and Black-Veined Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lewes Wave is recorded against all the insects logged in Biebrza National Park (8 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.
