The left forewing of an Erebia medusa male used for (A) traditional and (B) geometric morphometrics. A. Studied traits. W – width, l – length, B – black pattern, W – white pattern. B. Distribution of landmarks (LM 1–16). Landmarks: 1 – intersection of veins at the base of the discal cell, 2 – Discal cell and Cu2 intersection, 3 – Discal cell and Cu1 intersection, 4 – Discal cell and M3 intersection, 5 –Discal cell and M2 intersection, 6 – Discal cell and M1 intersection, 7 – Discal cell and R4 Intersection, 8 – R4 and R5 intersection, 9 – R4 terminally, 10 – R5 terminally, 11 – M1 terminally, 12 – M2 terminally, 13 – M3 terminally, 14 – Cu1 terminally, 15 – Cu2 terminally, 16 – A terminally.