Lysandra hispana
In 3 days ~10% in a week ~20%
Lysandra hispana, the Provence chalk-hill blue, is a butterfly of the family Lycaenidae. It is found in Spain, southern France and northern Italy. The wingspan is 16–18 mm. It is very similar to Lysandra coridon but is paler (greyer and duller, greyish pearly-blue, nacreous blue) with the distal margin more strongly spotted. However both are very variable. The butterfly is on wing from April to September in two generations. The habitat is dry grassland on chalk or limestone.
The larvae feed on horseshoe vetch. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Provence Chalk-Hill Blue sighting in Pyrénées National Park on a given day, based on 6 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.
May
In that month about 10% of wildlife watchers report a Provence Chalk-Hill Blue in Pyrénées National Park on a given day, against under 5% in June to April, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Provence Chalk-Hill Blue sightings with a recorded time, and about 9 in 10 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 Provence Chalk-Hill Blue sightings, Pyrénées National Park ranks 2nd at under 5%. The best odds are in Cévennes National Park (France, about 10%).
Same genus: Lysandra
The closest relatives of the Provence Chalk-Hill Blue that you can see in Pyrénées National Park (genus Lysandra) are Adonis Blue (about 20%) and Chalkhill Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Provence Chalk-Hill Blue is recorded against all the insects logged in Pyrénées National Park (6 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.
