Byasa impediens

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Pink-spotted windmill
Macrolepidoptera01seitz 0013.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Papilionidae
Genus: Byasa
Species: B. impediens
Binomial name
Byasa impediens[1]
(Seitz, 1907)[1]

Byasa impediens, the pink-spotted windmill, is a species of butterfly from the family Papilionidae (swallowtails) found in Taiwan.[3]

The wingspan is 10–11 cm. The wings are black and have large light pink spots. The underside of the wings are similar to the upside. The body is partially black with a covering of red hairs underneath.

The larva feed on Aristolochia species.


No data on conservation status; more research needed. [4] Subspecies B. i. febanus is sometimes accepted as a separate species.


  1. ^ a b Häuser, Christoph L.; de Jong, Rienk; Lamas, Gerardo; Robbins, Robert K.; Smith, Campbell; Vane-Wright, Richard I. (28 July 2005). "Papilionidae – revised GloBIS/GART species checklist (2nd draft)". Entomological Data Information System. Staatliches Museum für Naturkunde Stuttgart, Germany. Retrieved 21 June 2013. . See note on "impediens" regarding reason for change of authority.
  2. ^ Funet, Atrophaneura
  3. ^
  4. ^ Collins, N. Mark; Morris, Michael G. (1985). Threatened Swallowtail Butterflies of the World: The IUCN Red Data Book. Gland & Cambridge: IUCN. ISBN 978-2-88032-603-6. 

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