Euchloe simplonia
In 3 days ~40% in a week ~70%
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 |
Possible
About 20% of wildlife watchers report a Mountain Dappled White sighting in Mercantour National Park on a given day, based on 17 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 129th most-seen of the 412 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
June
In that month about 40% of wildlife watchers report a Mountain Dappled White in Mercantour National Park on a given day, against under 5% in August to April, the lowest months.
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.
Yes
Of the 2 parks where we can rate Mountain Dappled White sightings, Mercantour National Park has the highest daily chance: about 20%. Next come Pyrénées National Park (France, under 5%).
Same family: Pieridae
The closest relatives of the Mountain Dappled White that you can see in Mercantour National Park (family Pieridae, Whites, Yellows, and Sulphurs) are Mountain Clouded Yellow (about 30%), Green-Veined White (about 30%) and Black-Veined White (about 30%), 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 Mercantour National Park (17 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.
