purple emperor(n = noun.animal) apatura iris - large European butterfly the male of which has wings shaded with purple;
is a kind of emperor, emperor butterfly

banded purple, early purple orchid, emperor, emperor butterfly, emperor francis ii, emperor moth, emperor napoleon iii, emperor of rome, emperor penguin, holy roman emperor, holy roman emperor frederick ii, late purple aster, order of the purple heart, purple, purple amaranth, purple anise, purple apricot, purple avens, purple bacteria, purple beech, purple boneset, purple chinese houses, purple clematis, purple clover, purple cress, purple finch, purple fringeless orchid, purple fringeless orchis, purple gallinule, purple grackle, purple granadillo, purple ground cherry, purple heart, purple heather, purple loco, purple locoweed, purple loosestrife, purple martin, purple milk vetch, purple mullein, purple nightshade, purple onion, purple orchis, purple osier, purple passage, purple pea, purple poppy mallow, purple rock brake, purple sage, purple sanicle, purple saxifrage, purple silkweed, purple strawberry guava, purple trillium, purple velvet plant, purple virgin's bower, purple willow, red-spotted purple, reddish purple, retinal purple, roman emperor, royal purple, texas purple spike, tyrian purple, visual purple