noun
nymphalid; brush-footed butterfly
Refers to any butterfly of the family Nymphalidae, the largest butterfly family. In everyday Japanese, タテハチョウ is the standard term.
タテハチョウの仲間には、オオムラサキやアサギマダラがいる。
Among the nymphalid butterflies are the great purple emperor and the chestnut tiger.
この公園では、春になるとたくさんのタテハチョウが見られます。
In this park, you can see many brush-footed butterflies in spring.
The name タテハチョウ is said to come from the way the wings are held upright (立て羽) when resting, though the exact historical derivation is uncertain.