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The Large White Butterfly (Pieris brassicae) or Large Cabbage White Butterfly is of the family Pieridae which is in the genus Pieris. It occurs very commonly through out Eurasia and North Africa as well as an introduced species in South Africa. Although larger, it can be confused with the Small White Butterfly (Pieris rapae) which has a much reduced black edge to the upper forewing.
Patrick J. O'Keeffe / Raw Birds