A new subspecies occuring in Central Formosa. This new subspecies, which is distinctly different from Ch. chrysolora as the well developing of the black spots on its both side of wings, is rather closely resembled Ch. ulupt morii occuring in Korea but is easily distinguished from it in the following respects. 1. On the wing shape, the apex of forcings is not prominent as morii, then the size is smaller. 2. In male, the dark brownish area of forewings is much broader and the colour is darker. Furthermore, at space 4, this new one appears a black oblique band which is absent in morii. The series of black spots on the outer part of hindwings are remarkably extended, especially near hindwings beneath the black space is wider. 3. In female, the white band of upperside is much broader and is neither separated by every black vein nor turning purple. Moreover on hindwings, the inner outline of this band is not distinct. Length of forewings: ♂ 59 mm, ♀ 71 mm. Habitat: Central Formosa. Holotype: ♂, Mt. Morrison, 23. vii. 1957; Allotype : ♀, Puli 4. vii. 1958; Paratypes: 4 ♂♂. Chitoria chrysolora, which has hitherto mostly been treated as a subspecies of Ch. ulupi DOHERTY, seemes to be entirely different species of ulupi as Mr. Le MOULT (1950) classified.
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