ID Needed for Papilio

[Blue Nawab]

Dear Dr Seow,
Pls help with the following ID. Is this Papilio prexaspes prexaspes or Papilio iswara iswara? Thanks!
26536

[Psyche]

Papilio iswara iswara.

The two are very confusing in field shots though P. iswara is much larger being about 1.5 X larger.


P. iswara iswara.
Large size. HW tail slender ; a ringed spot in the inner tornal margin (may be obscure).
https://singapore.biodiversity.online/species/A-Arth-Hexa-Lepidoptera-000300?imageId=0
https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/5cb77cac-13f5-4143-a7f2-17dfeebe596e/d1zobud-899360c0-d888-4f22-9363-020e2fa41545.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJ IUzI1NiJ9.eyJpc3MiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQz NzNhNWYwZDQxNWVhMGQyNmUwIiwic3ViIjoidXJuOmFwcDo3ZT BkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsImF1ZCI6 WyJ1cm46c2VydmljZTpmaWxlLmRvd25sb2FkIl0sIm9iaiI6W1 t7InBhdGgiOiIvZi81Y2I3N2NhYy0xM2Y1LTQxNDMtYTdmMi0x N2RmZWViZTU5NmUvZDF6b2J1ZC04OTkzNjBjMC1kODg4LTRmMj ItOTM2My0wMjBlMmZhNDE1NDUuanBnIn1dXX0.EdqpXKOyacdk bBv1sznHhJ1s4sXdnPnqBEpcXg6usaU
https://www.flickr.com/photos/kawsy/16060149384


P. prexaspes prexaspes.
Smaller ; HW tail very thick, broad; No tornal ringed spot.
https://en.wikipedia.org/wiki/Papilio_prexaspes#/media/File:Papilio_prexaspes_Rhopalocera_Malayana.jpg
https://wanderingbutterflyeffect.files.wordpress.com/2009/11/6a0100a801ee89000e0123f1796e73860f.jpg
https://4.bp.blogspot.com/-TDGuZev9XnE/Ueqh2On8_rI/AAAAAAAAKkk/9js4K-Wnoq8/s1600/BlueHelen-KSK2.jpg


TL Seow: Cheers.