Leptidea sinapis (Linnaeus, 1758)
Wood White
April 9, 2007 - Quinson - 04 - Provence-Alpes-Côte d'Azur - France © Frédéric Vivien
This may either be Leptidea sinapis or Leptidea reali as both species can only be distinguished by the study of their genitalia.