 The Swiss brassy ringlet is univoltine and its caterpillars feed on Poaceae grasses, especially sheep's fescue ("Festuca ovina"), matgrass ("Nardus stricta"), and various other fescues ("Festuca") and meadow-grasses ("Poa").They overwinter and pupate on the ground around May and June.This species can be found in the Alps of France, Italy, Germany, Switzerland, Liechtenstein, in Austrian Vorarlberg, and adjacent regions.