Information authenticated by Roy Leverton.
Palaearctic region: the region that includes Europe, the part of Asia to the north of the Himalyan-Tibetan barrier, North Africa and most of Arabia.
Pupa: stage in an insect's development when huge changes occur, which reorganise the larval form into the adult form. In butterflies the pupa is also called a chrysalis.
Univoltine: (also known as 'single-brooded'). Insect life cycle that takes 12 months to be complete, and involves a single generation. The egg, larva, pupa or adult over winters as a dormant stage.