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 Lyon on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 361st most-seen of the 411 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.
May–July and September
In those months about 10% of wildlife watchers report a Dorset Cream Wave in Lyon on a given day, against under 5% in August and October–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.
5th of 8
Of the 8 cities where we can rate Dorset Cream Wave sightings, Lyon ranks 5th at under 5%. The best odds are in Porto (Portugal, about 10%), Turin (Italy, about 10%) and Essen (Germany, about 10%).
Same family: Geometridae
The closest relatives of the Dorset Cream Wave that you can see in Lyon (family Geometridae, Geometer Moths) are Willow Beauty (about 10%), Winter Moth (about 10%) and Small Dusty Wave (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 Lyon (5 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.
