Idaea fuscovenosa
In 3 days ~20% in a week ~30%
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 Porto on a given day, based on 23 verified sightings from GBIF citizen-science data. It is the 223rd 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 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Dwarf Cream Wave in Porto on a given day, against under 5% in August to May, the lowest months. Those are among Porto's driest months, with about 25 mm of rain a month against 140 mm in January.
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.
Among the best
Of the 8 cities where we can rate Dwarf Cream Wave sightings, Porto ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in London (United Kingdom, about 10%).
Same genus: Idaea
The closest relatives of the Dwarf Cream Wave that you can see in Porto (genus Idaea) are Riband Wave (about 20%), Satin Wave (about 20%) and Idaea eugeniata (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 Porto (23 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.
