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Scientific name Trogonoptera Rippon, [1890] Chinese name 紅頸鳥翼蝶屬 English name Rajah Birdwing Butterfly Classification 鳳蝶科(Papilionidae)，鳳蝶亞科(Papililoninae)，裳鳳蝶族(Troidini) Diagnosis Wingspan of this genus 15-20 cm, sexually dimorphic in colouration. Forewing very elongate, ground colour black, with a series of submarginal triangular metallic green patches; underside of forewing bearing a series of metallic blue and white patches; hindwings much smaller than forewing, with a single metallic green area in discoidal cell; underside of hindwing having metallic blue stripes near Sc and Cu veins. Distribution Endemic to the major islands and areas belonging to the Sundaland, e.g. Malaysian Peninsula, Borneo, Sumatra, and Palawan of the Philippines. Habitat and Ecology This genus has nly two species, Trogonoptera brookiana (Wallace, [1856]) (紅頸鳥翼蝶) (Figs. 79-82) and Trogonoptera trojana (Honrath, 1886) (巴拉望紅頸鳥翼蝶) (Figs. 83-86) recognized. They usually soar in tropical forests. The males are well-known for their aggregated behavior of licking water along creeks. Females visit flowers of various plant families. The larvae of both species utilize Aristolochia spp. as hostplant. Threats and Conservation Status The whole genus is categorized into the Appendix II of the CITES, and as well trading is limited by the European Union. The threats mainly come from over-collecting and unlimited deforestation in Malaysia, Borneo and Indonesia. It is said some efforts of captive breeding have being conducted while such information have never been positively proved.   Trogonoptera brookiana (Wallace) , male, upperside Trogonoptera brookiana (Wallace) , male, underside Trogonoptera brookiana (Wallace) , female, upperside Trogonoptera brookiana (Wallace) , female, underside Trogonoptera trojana (Honrath) , male, upperside Trogonoptera trojana (Honrath) , male, underside Trogonoptera trojana (Honrath) , female, upperside Trogonoptera trojana (Honrath) , female, underside