Last modified: Jan. 13, 2019, 8:57 a.m.
A local and rare species throughout Belgium. Most observations are from the Kempen and the province of Namur. Vulnerable.
The adults fly in one generation a year; from mid June towards early August, with a peak during July.
The larva lives mainly on Quercus. The larva is attented bij different species of ants. Hibernates as an egg.