Chalk-Hill Blue (Lysandra coridon)
Sub-family : Lycaeninae
Description: The chalk-hill blue is among the varieties most frequently encountered. They are found in almost every country area, primarily on the dry limestone pastures. The males are known by their light whitish blue colouration while the females are brown with orange points on the lower edge of their back wings. In Luxembourg, it is the most recognisable argus butterfly.
Periods of flight: One flight from July to August.
Caterpillar hosts: Hippocreppis.