Erebia sudetica is a satyrine butterfly endemic to the mountains of Central and Europe. It has a highly patchy distribution at high elevations in the Massif Central (South-central France), the French and Swiss Alps, the Sudety Mountains of Poland and Czechia, and the Carpathians of Romania (Kudrna 2002). The butterflies are found in alpine and subalpine meadows where the caterpillars feed on grasses. Several subspecies are recognized, and a series of studies have investigated the population genetics and ecology of this species (Cupedo 1996, Habel et al. 2010, Haubrich & Schmitt 2007, Konvička et al. 2010, Kuras et al. 2001a,b, 2003, Schmitt 2009). Most populations are threatened due to changes in land use (Lepidopterologen-Arbeitsgruppe 1987, Sonderegger 2005, van Swaay et al. 2012, Wermeille et al. 2007).