Green-veined White Butterfly

Whilst walking along the River Axe bank I found these two Green-veined White Butterflies. Not being a species I have any good photos of I preceded to take some shots. Green-veined White is one I probably overlook as just a small or large white but when perched with closed wings there is no mistaking this species. Its flight times are april to september being commonest in may and august. Taken with a Canon S3 IS.