N A T U R K U N D L I C H E S   I N F O R M A T I O N S S Y S T E M

Troides aeacus Felder & Felder, 1860

(zoological nomenclature: valid name, available)

General information:

Ornithoptera aeacus Felder & Felder, 1860: 225
Type locality: India
Type: Holotype : India, ex coll. Marchand, coll. C. & R. Felder, in coll. NHM, London (Häuser et al. 2005)

Synonyms, misspellings, wrong determinations, etc.:
Ornithoptera rhadamanthus Boisduval, 1836: 180. Junior subjective synonym.
Ornithoptera aeacus f. praecox Fruhstorfer , 1913. Type locality: Thailand, Cambodia. Unavailable infrasubspecific name.

Golden Birdwing

Habit:

   
   
Picture from: Seitz 1909
Detailed view
Picture from: Seitz 1909
Detailed view
   

Description of adults: Examined: Pictures of and . Wing expanse: 119 - 188 mm (Bingham 1907). "Closely resembles P. cerberus. differs as follows: - Upper side, fore wing: the pale adnervular streaks more prominent, in some specimens extended into the cell along the outer half of the subcostal and of the median nervures. Hind wing: the coneshaped terminal black markings in interspaces 2, 3, and 4 more or less broadly bordered on the inner side by a dusky area that is irroratcd with blackish scales; the black on the costal margin narrower, not extended below vein 8. Underside similar to the upperside, but the dusky black borders to the cone-shaped marks in interspaces 2, 3, and 4 wanting. Antennae, head, thorax, abdomen and abdominal fold as in cerberus, but the abdomen beneath with two rows of black spots. In the the differences from cerberus are - Fore wing: the pale adnervular streaks very broad, very prominent and extended well into the cell. Hind wing: the basal third of the cell and of interspace 2 black, the middle portion of the latter yellow anteriorly, buffy-white posteriorly; the posterior half of the discal area between the postdiscal spots themselves and between them and the terminal cone-shaped markings more or less irrorated with blackish scales; lastly, the black in interspace 7 interrupted by an inner triangular and an outer small yellow spot. Antennae, head, thorax and abdomen as in cerberus, but the abdomen beneath with two lateral and two median rows of black spots." (Bingham 1907).

Distribution:

The species is distributed throughout the Himalayas, Indochina, south, central and western China, as well as Tibet (Seitz 1909). Furthermore, it is found in large parts of the Oriental region (Bhutan [?]; Cambodia; China; India; Indonesia; Laos; Malaysia; Myanmar (Burma); Nepal; Taiwan; Thailand; Vietnam following Häuser et al. 2005). It is the only species of Troides that reaches the palaearctic region.

Biology:

     
, nectaring: Thailand, Pattaya, Jomtien Beach, Sunset Village, 2001.01.16      
Picture from: Lettner Rudolf & Gerlinde
Detailed view
     

Imagines were found on the wing in January, nectaring in Parks along wood margins and tall herb vegetation (Kurz & Kurz 2012).

Videos:

female, nectaring: Thailand, Pattaya, Jomtien Beach, Sunset Village, 2001.01.16 (R. & G. Lettner)

Diagnosis:

T. aeacus T. helena cerberus : Thailand, Koh Samui, Lamai Beach, 1996.01.15 ± 8 d, leg. R. & G. Lettner, coll. Michael Kurz T. aeacus T. helena cerberus : Thailand, Koh Samui, Lamai Beach, 1996.01.15 ± 8 d, leg. R. & G. Lettner, coll. Michael Kurz
Picture from: Seitz 1909
Detailed view
Picture from: Kurz Michael
Detailed view
Picture from: Seitz 1909
Detailed view
Picture from: Kurz Michael
Detailed view

From the quite similar Troides helena (Linné, 1758), the species is easily separated by the blackish suffusion around the black oval spots in the submarginal area of the hindwing. In females, the latter are much larger than in T. helena.

Worth knowing:

Sources:

Bingham, C. T. 1907. Fauna of British India, including Ceylon and Burma. Butterflies - Vol. II. Taylor & Francis, London, 480 pp., 20 pl.
Felder, C. & R. Felder 1860. Lepidopterologische Fragmente VI. Wiener Entomologische Monatsschrift: 225-251.
Häuser, C. L., J. Holstein & A. Steiner 2005. The Global Butterfly Information System. http://www.globis.insects-online.de. Last updated 14.04.2011 [online 29 August 2012].
Kurz, M. A. & M. E. Kurz 2000–2012. Naturkundliches Informationssystem. – URL: http://www.nkis.info [online 30 August 2012].
Seitz, A. 1909. The Macrolepidoptera of the World. 1. Section, 1. Volume: The Palearctic Butterflies. Verlag Alfred Kernen. Stuttgart, 379 pp., 89 pl.

Publication data:

history:
Kurz Michael: 2011.10.21
Kurz Michael: 2012.08.28
Kurz Michael: 2012.08.29
Kurz Michael: 2012.08.30
not reviewed

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