Euchloe simplonia
In 3 days ~10% in a week ~20%
Euchloe simplonia, the mountain dappled white, is a butterfly found in the mountainous regions of Western Europe. Its main foods are Sinapis, Isatis, Aethionema, Iberis and Biscutella species. Though data are lacking, it is believed that the species is restricted to a small area of the western Alps and is endangered in Europe. The species is closely related to Euchloe naina, and cross-breeding experiments suggest that E. nania may be a subspecies, though this is contested on morphological grounds. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mercantour National Park | 🇫🇷 France | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Mountain Dappled White sighting in Pyrénées National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 1144th 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 20%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Mountain Dappled White in Pyrénées National Park on a given day, so our monthly data shows no clear season.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Mountain Dappled White sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Mountain Dappled White sightings, Pyrénées National Park ranks 2nd at under 5%. The best odds are in Mercantour National Park (France, about 20%).
Same family: Pieridae
The closest relatives of the Mountain Dappled White that you can see in Pyrénées National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Clouded Yellow (about 20%), Black-Veined White (about 20%) and Green-Veined White (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mountain Dappled White is recorded against all the insects logged in Pyrénées National Park (5 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.
