Sadly, there is no way I can tell which of the three species of Western European Wood Whites these are. The top one was photographed in the Alp-Maritimes, the next in the French Pyrenees, and below that, in the Var, again in France. Further down, two butterfly photos of the UK version, spring brood, from Northamptonshire, Mid May 2017.. Still further, two photos of the more lightly marked,  rounded wing summer brood individuals from the Alps