Trogonoptera trojana, the Palawan birdwing or triangle birdwing, is a birdwing butterfly of the family Papilionidae. It is endemic to Palawan in the Philippines. It is one of only two species in its genus, the other being the more widespread Rajah Brooke's birdwing, where the male has larger green markings on the hindwings. This species is included in CITES Appendix II,Butterfly Corner. Trogonoptera trojana. Accessed 21 May 2012 restricting international export to those who have been granted a permit. The wingspan is approximately . The species may be observed flying at any point during the year. The larvae feed on Aristolochia.
Taxonomy Genus: Trogonoptera Rippon, 1890 Species: Trogonoptera brookiana Wallace, 1855 Subspecies: Trogonoptera brookiana brookiana (Wallace, 1855) Form: Trogonoptera brookiana brookiana f. brookiana Wallace, 1855 Form: Trogonoptera brookiana brookiana f. julijae S.Hu, 2007 Subspecies: Trogonoptera brookiana toshikii Kobayashi, 1991 Subspecies: Trogonoptera brookiana akikoa Morita, 1994 Species: Trogonoptera trojana Honrath, 1886
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