Habitat:
Parnassiana dirphys inhabits stony, scarcely vegetated mountain slopes on Mount Dirphys on Euboea from about 1000m to the summit at about 1740m.
Life cycle:
The adults appear in summer. I recorded only small larvae when climbing the mountain in mid-May 2022. Most individuals where found in small patches of somewhat denser vegetation in the rocks and screes.
Remarks:
Parnassiana dirphys is endemic to Mount Dirphys on Euboea (Greece).