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!
larva lives on different species of Viola.
adults fly in two to three overlapping generations a year from early
April till the end of October.
Luxembourg, Arlon, 07 August 2006.
(Photo © Jean Yves Baugnée)