Stegania trimaculata
In 3 days ~20% in a week ~30%
Stegania trimaculata, the Dorset cream wave, is a moth of the family Geometridae. It is found throughout Europe and India, mainly in Southern Europe, also in Borneo. The wingspan is 26–28 mm. The length of the forewings is 10–13 mm. The moth flies in two generations from May to September [1].
The larvae feed on various species of poplar. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 2 | Sierra de Guadarrama National Park | 🇪🇸 Spain | |
| 3 | Cévennes National Park | 🇫🇷 France | |
| 4 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Dorset Cream Wave sighting in Essen on a given day, based on 14 verified sightings from GBIF citizen-science data. It is the 183rd most-seen of the 434 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.
August
In that month about 20% of wildlife watchers report a Dorset Cream Wave in Essen on a given day, against under 5% in June and September–April, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Dorset Cream Wave sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 8 cities where we can rate Dorset Cream Wave sightings, Essen ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Porto (Portugal, about 10%) and Turin (Italy, about 10%).
Same family: Geometridae
The closest relatives of the Dorset Cream Wave that you can see in Essen (family Geometridae, Geometer Moths) are Riband Wave (about 20%), Double-Striped Pug (about 10%) and Willow Beauty (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dorset Cream Wave is recorded against all the insects logged in Essen (14 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.
