What is "brush-footed butterflies"

Nymphalidae \Nymphalidae\ prop. n. A natural family of large beautifully colored butterflies, called also the brush-footed butterflies; formerly called Nymphales.

Syn: family Nymphalidae.

Nymphales \Nym*pha"les\, prop. n. pl. [NL.] (Zo["o]l.) Same as Nymphalidae, an extensive family of butterflies including the nymphs, the satyrs, the monarchs, the heliconias, and others; -- called also brush-footed butterflies.