Darwin's Alpine Heath (Coenonympha darwiniana)

Until some 10-15 years ago, this would have been considered Coenonympha gardetta (also called Alpine Heath as common name). However, recent studies have agreed to consider this a species on its own. It is only found on the South side of the Alps.

In the Biella region of Piemont, Italy, they are quite abundant.

Further info
* In German: https://lepiforum.org/wiki/page/Coenonympha_darwiniana
* In Italian: https://www.farfalleitalia.it/sito/972/index.php
* In English: http://www.pyrgus.de/Coenonympha_darwiniana_en.html

For reference, here's a shot of C. gardetta: