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Nymphalidae (admirals, brush-footed butterflies, duffers, emperors, fawns, frit-illaries, map butterflies, rajah butterflies, saturn butterflies, vanessas; subclass Pterygota, order Lepidoptera) Family of small to large, colourful butterflies. The forelegs are reduced, non-functional, and have long, hair-like scales. The egg is ribbed, the larvae are spined, and the pupae are not supported by a silken girdle. There are about 5000 species and the family has a world-wide distribution.