Pieris marginalis (margined white) is a butterfly species seen across the coast of Western North America as indicated by data collected by eButterfly. Life History Traits Pieris marginalis (margined white) is a canopy generalist who feeds on the plant family of Brassiceae. The species is unique as it has been seen near and away from disturbed habitat; indicating an adaptation for habitat generalization. References marginalis Butterflies described in 1861 Butterflies of North America Taxa named by Samuel Hubbard Scudder