Idaea fuscovenosa
In 3 days ~20% in a week ~40%
Idaea fuscovenosa, the dwarf cream wave, is a moth of the family Geometridae. It is found in the Palearctic. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Pyrénées National Park | 🇫🇷 France | |
| 3 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 4 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom | |
| 2 | Porto | 🇵🇹 Portugal | |
| 3 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 4 | Copenhagen | 🇩🇰 Denmark | |
| 5 | Vienna | 🇦🇹 Austria | |
| 6 | Birmingham | 🇬🇧 United Kingdom | |
| 7 | Paris | 🇫🇷 France | |
| 8 | Prague | 🇨🇿 Czechia |
With luck
About 10% of wildlife watchers report a Dwarf Cream Wave sighting in Cévennes National Park on a given day, based on 23 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 493rd most-seen of the 996 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.
June to August
In those months about 10% of wildlife watchers report a Dwarf Cream Wave in Cévennes National Park on a given day, against under 5% in September to May, the lowest months. Those are among Cévennes National Park's driest months, with about 60 mm of rain a month against 260 mm in October.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Dwarf Cream Wave sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 4 parks where we can rate Dwarf Cream Wave sightings, Cévennes National Park has the highest daily chance: about 10%. Next come Pyrénées National Park (France, under 5%) and Sierra de Guadarrama National Park (Spain, under 5%).
Same genus: Idaea
The closest relatives of the Dwarf Cream Wave that you can see in Cévennes National Park (genus Idaea) are Portland Ribbon Wave (about 10%), Satin Wave (about 10%) and Idaea ostrinaria (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dwarf Cream Wave is recorded against all the insects logged in Cévennes 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.
