Last modified: April 13, 2021, 3:02 p.m.
In Flanders the species is critically endangered. A local species occuring in the south of Belgium where it is vulnerable.
The adults fly in two generations a year: from mid May till the end of June, and from mid July till end of August. In favourable years a third generation occurs from the beginning of September till early October.
The larva lives on Trifolium pratense and is attended by ants of the genus Lasius.