rare and local species occuring in 2 provinces of Flanders, only known
from the Kempen. In some areas locally fairly common. Threatened!
larva lives on Gentiana pneumonanthe and is attended by ants of the genus Myrmica.
adults fly in one generation a year: onwards from early July till end of August.
Antwerpen, Oud-Turnhout, 10 August 2004.
(Photo © Maarten Jacobs)