The Queen is one species in a complex mimicry ring. Where their range overlaps, the appearance of these butterflies is similar. The Monarch ("Danaus plexippus") is orange. It has thick, black veins. The Viceroy ("Limenitis archippus") is smaller. It has thick, black veins. It has a black band across the hind wing. The Soldier ("Danaus eresimus") has thin black veins. On the underside of the hind wing, there is a row of pale, square-shaped spots.