Pieris brassicae

Female, Switzerland, September 2006

Female, Gibraltar, February 2007

Male, Gibraltar, February 2007

Female, June 2005, Switzerland

The same female

Val d'Aran, July 2002

Suffolk, July 2002 (the male is on the right)
Large whites are common butterflies all over Europe though they are migrants and their populations may vary dramatically from year to year. They are regarded as pests of cabbage plantations but frankly I think we should learn to share. Summer without cabbage whites would not be the same.