Wingspan: 16mm - 20mm
Imago: Univoltine, a very local species with only two known sites in the Dordogne. Needs a marshy habitat where it's foodplant can be found to thrive.
Larva: Monophagous, feeding on great burnet (Sanguisorba officinalis) before living underground in the nests of two species of Myrmica ants.
Overwinter: As a larva and then pupa in ant nests.