Byasa alcinous

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Byasa alcinous
Atrophaneura alcinous 1856 (2).jpg
Atrophaneura alcinous 1856 (1).jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Papilionidae
Genus: Byasa
Species: B. alcinous
Binomial name
Byasa alcinous
(Klug, 1836)[1]
  • Papilio alcinous Klug, 1836
  • Papilio alcinous Rothschild, 1895
  • Papilio spathatus Butler, 1881
  • Papilio haemotostictus Butler, 1881
  • Papilio (Pharmacophagus) alcinous m.v. veris Sheljuzhko
  • Tros alcinous
  • Atrophaneura alcinous[2]

Byasa alcinous,[1] the Chinese windmill, is a butterfly of the family Papilionidae.


Byasa alcinous has a wingspan reaching about 9–10 centimetres (3.5–3.9 in). The basic colour of the wings is black or dark brown. The hindwings have long tails and a chain of red spots at the edges. The thorax and the abdomen are mainly black on the upperside and the underside, with several black spots, while the other areas are red.[3] Adults are on wing from May to August in two generations.

The larvae feed on Aristolochia species including A. mandshhuriensis, A. debilis and A. manchuriensis.[3] Subspecies has been recorded on A. shimadai, A. liukiuensis, A. kankauensis, A. elegans, A. debilis, A. kaempferii, A. onoei, A. tagala, Cocculus trilobus and Metaplexis chinensis. The species overwinters as a pupa.[2][3]


This species can be found in the Asian part of the Palaearctic ecozone and partially in the Indomalaya ecozone, from Bhutan, and eastern China to the southern Ussuri region, Korea and Japan.[3][4]


Byasa alcinous is present in mixed broadleaved forests.


  • B. a. alcinous
  • B. a. confusus (Rothschild, 1895) (Ussuri)
  • B. a. yakushimana (Esaki & Umeno, 1929) (Japan)
  • B. a. loochooana (Rothschild, 1896) (Japan)
  • B. a. miyakoensis (Omoto, 1960) (Japan)
  • B. a. bradanus (Fruhstorfer, 1908) (Japan)
  • B. a. mansonensis (Fruhstorfer, 1901) (south-central and south-eastern China, Taiwan) [3]



  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. 
  2. ^ a b
  3. ^ a b c d e Butterfly Corner
  4. ^ Russian Insects

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