Left fore and hindwing of P. apollo used for the morphometric analysis, including the morphometric landmarks Forewing: 1 – R4 and R5 intersection, 2 – R4 terminally, 3 –R5 terminally, 4 –M2 terminally, 5 –M3 terminally, 6 –Cu1 terminally, 7 –Cu2 terminally, 8 –A2 terminally, 9 – Discal cell and Cu1 intersection, 10 – Discal cell and Cu2 intersection. Hindwing: 11 –Rs terminally, 12 – M1 terminally, 13 – M2 terminally, 14 – M3 terminally, 15 – Cu1 terminally, 16 – Discal cell and M1 intersection, 17 – Discal cell and Rs intersection.