Last modified: Jan. 13, 2019, 10:56 a.m.
In Flanders only one population in the extreme south-west of the province of West-Vlaanderen, regularly enforced with vagrants. Still more widespread in the southern part of Belgium. Threatened!
The adults fly in two to three overlapping generations a year from early April till the end of October.
The larva lives on different species of Viola.