The head and thorax are white. The abdomen is yellow-orange with a row of black spots. The fore wing (the top wing) is white with a variable amount of black spots (some individuals do not have these spots). The hind wing (the bottom wing) is yellow-orange in males. It is white in females. Both sexes have 3-4 black spots or blotches on their hind wings. The wingspan ranges from 4.5 to 6.8 cm.