In addition, isolated observations are known in the Allgäu from the Vorderen Bregenz Forest (Nagelfluhkette) and from the Vilser Mountains.

This apparently natural gap on the northern edge of the area is confirmed in the Austrian distribution atlas (Reichl 1992).

[1] The height amplitude of the reports spans a range of 900-2300 m, with a focus between 1700 m and 2000 m.[1] The German name "Gletscherfalter" (=glacier butterfly), derived from the scientific name "glacialis", is misleading and only a reference to the vertical niche.

Rather, a short-grass vegetation structure of various lawn communities in a mosaic with rock and rubble corridors as well as tanning and (soil) dryness reflect the most important habitat requirements.

[1] The imagos are fast, agile fliers that often sit on the ground or rock, but also on wood or dry grass.

The males show territorial behavior or hide hunting for females flying past, whereby other insects are also accidentally approached.

[1] Flower visits are hardly documented in Bavaria, so far Acinos alpinus, Rhododendron hirsutum and Thymus spp.