Stegania trimaculata
In 3 days ~10% 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 |
Rare
Under 5% of wildlife watchers report a Dorset Cream Wave sighting in Pyrénées National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 657th most-seen of the 1277 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June and August
In those months about 10% of wildlife watchers report a Dorset Cream Wave in Pyrénées National Park on a given day, against under 5% in July and September–May, 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.
4th of 4
Of the 4 parks where we can rate Dorset Cream Wave sightings, Pyrénées National Park ranks 4th at under 5%. The best odds are in Sierra Nevada National Park (Spain, about 20%), Sierra de Guadarrama National Park (Spain, about 10%) and Cévennes National Park (France, about 10%).
GBIF citizen-science records
It is estimated from how often the Dorset Cream Wave is recorded against all the insects logged in Pyrénées National Park (15 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.
