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Biology

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The adult chimaera birdwing feeds upon the nectar of hibiscus plants and African tulip trees, and groups of this species can be seen circling the tops of these trees. The female lays up to 20 eggs on the food plant and once hatched, the caterpillars consume the leaves of the plant before pupating. The pupa undergoes metamorphosis and emerges some weeks later as the adult butterfly (4).
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Conservation

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There is no targeted conservation action for this species and as long as the human population continues to grow in Indonesia and Papua New Guinea, habitat loss will continue. The chimaera birdwing is listed on Appendix II of the Convention on International Trade in Endangered Species, which serves to regulate the trade in the species or any of its parts by requiring export licences and producing quotas (2). While the collection of chimaera birdwings from the wild is not believed to pose a threat to the species, this butterfly is ranched in moderate numbers in the highlands of Papua New Guinea (3).
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Description

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The upperside of the forewings of the male chimaera birdwing are black with three streaks of yellowish-green scales. The hindwings are mainly yellow with an area of black and small patches of green on top of the yellow (4). There are two or more black dots within the yellow area. The underside is more colourful with less black areas. Females are dark brown, with several indistinct white spots on the forewings and a broad pale band on the hindwing enclosing a semicircular series of black spots. The furry body is primarily black and yellow. The caterpillar has a black body with a yellow 'saddle', covered with small, spiky bumps. The pupa is black mottled with pale yellowish-brown (3). While some scientists believe there are three subspecies of the chimaera birdwing (Ornithoptera chimaera chimaera, O. c. charybdis, and O. c. flavidior), each occupying slightly different ranges (4) (5), others believe that O. c. charybdis, and O. c. flavidior are simply local forms (6).
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Habitat

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This striking butterfly inhabits primary rainforest from 1,200 to 2,800 metres above sea level, but it is most frequently encountered between 1,600 and 2,000 metres (3). Adult chimaera birdwing are most commonly encountered flying over ridges several metres above the ground or feeding at the flowers of tall forest trees, occasionally in large numbers (5).
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Range

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The chimaera birdwing is restricted to montane areas of Papua New Guinea and Irian Jaya, Indonesia (4).
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Status

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The chimaera birdwing is currently classified as Lower Risk / Near Threatened (LR/nt) on the IUCN Red List (1) and is listed on Appendix II of CITES (2). This species has been reassessed and will soon be classified as Least Concern (LC) (3).
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Threats

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Habitat loss is the main threat to this species as forests are destroyed for agriculture, tree plantations, and urbanisation (1).
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Ornithoptera chimaera

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Ornithoptera chimaera, the chimaera birdwing, is a birdwing butterfly of the family Papilionidae. It is found in mountain areas of New Guinea, 1000 meters above sea level.

The "chimaera" portion of both the scientific and vernacular name, is named after the Chimaera, Greek: Χίμαιρα, Khimaira, from χίμαρος, khimaros, a creature in Greek mythology, composed of parts of three animals.

Description

As Schoenbergia chimaera, male in Robert Henry Fernando Rippon's Icones Ornithopterorum (1898 to 1906)

Ornithoptera chimaera is sexually dimorphic. The wingspan is 80–180 mm in females and 70–150 mm in males.

Male: The forewings are ground colour black. There are two green areas. The underside of the forewing is green. The margin of the wing is black. The veins are black. There is a chain of little postdiscal internervular black spots on the wing. The hindwing inner part and the edge are black. The other part of the wing is green and contains some large, golden spots and two or more black spots. The underside of the hindwing is green. There are large, golden spots and three black spots. The inner edge is very hairy.

The abdomen is bright yellow. Head and thorax are black. The underside of thorax has two red tufts.

Female: The female is larger than the male. The general colour of the female is dark brown. There is a chain of white postdiscal spots on the forewings, a discal chain and white subcostal spots. In the discal part of the hindwings there is a large, white area. The outer edge of this white area is yellow. Between the white part and the yellow part there is a chain of black spots.

Subspecies

  • Ornithoptera chimaera chimaera
  • Ornithoptera chimaera charybdis (van Eecke, 1915)
  • Ornithoptera chimaera flavidior Rothschild, 1913

Type material

The holotype is in the Natural History Museum, London.

Biology

Female

O. chimaera is a montane species found in the Central Range montane rainforests. The larvae feed on species of the genus Aristolochia including Aristolochia momandul. The female lays up to 20 eggs on the leaves. Adults feeds upon the nectar of Spathodea (an invasive species) and Hibiscus. Groups of both sexes can be seen circling the tops of these trees in the canopy.

Conservation

The chimaera birdwing is listed on CITES Appendix II, restricting international trade to those who have been granted a permit.[3] It is also regarded at near threatened by the IUCN.[1] The chimaera birdwing is listed on Appendix II of the Convention on International Trade in Endangered Species, which serves to regulate the trade in the species or any of its parts by requiring export licences and producing quotas[4]

Gallery

Selection of museum specimens of Ornithoptera chimaera

See also

References

  1. ^ a b Böhm, M. (2018). "Ornithoptera chimaera". IUCN Red List of Threatened Species. 2018: e.T15516A727316. doi:10.2305/IUCN.UK.2018-1.RLTS.T15516A727316.en. Retrieved 18 November 2021.
  2. ^ "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. ^ CITES appendices I, II and III, Version 27 April 2011.
  4. ^ Sands, Donald P. A.; New, Tim R. (2013), "The Richmond Birdwing Butterfly", Conservation of the Richmond Birdwing Butterfly in Australia, Dordrecht: Springer Netherlands, pp. 29–48, doi:10.1007/978-94-007-7170-3_2, ISBN 978-94-007-7169-7, retrieved 2020-10-15
  1. CITES (May, 2005) http://www.cites.org
  • D'Abrera, B. (1975) Birdwing Butterflies of the World. Country Life Books, London.
  • Haugum, J. & Low, A.M. 1978-1985. A Monograph of the Birdwing Butterflies. 2 volumes. Scandinavian Press, Klampenborg; 663 pp.
  • Straatman, Raymond; & Schmid, F.,1975 Notes on the biology of Ornithoptera goliath and O. chimaera (Papilionidae). Journal of the Lepidopterists' Society 29: 85-88.pdf
  • Thomas Graham Howarth, 1977 A list of the type-specimens of Ornithoptera (Lepidoptera: Papilionidae) in the British Museum (Natural History) Bulletin of the British Museum (Natural History). Entomology series 36:153-169 pdf

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Ornithoptera chimaera: Brief Summary

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Ornithoptera chimaera, the chimaera birdwing, is a birdwing butterfly of the family Papilionidae. It is found in mountain areas of New Guinea, 1000 meters above sea level.

The "chimaera" portion of both the scientific and vernacular name, is named after the Chimaera, Greek: Χίμαιρα, Khimaira, from χίμαρος, khimaros, a creature in Greek mythology, composed of parts of three animals.

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