Author 'Francis-Sisco' (Id 219892 ) : The concern arises only rarely with spread wings. Most of the time, we note the colors of the upper side of its wings when it is in vol.
Its background color is a bright orange-yellow with marginal bands black wide enough on the top of the fore and hindwings. This migratory happening in the beginning of the season and comes back in September. Lien : Https://fr.wikipedia.org/wiki/Souci_%28papillon%29