Chilasa slateri tavoyanus  (Butler, 1882)

Chilasa slateri tavoyanus ♂ Up. Chilasa slateri tavoyanus ♂ Un. Chilasa slateri tavoyanus ♂ Up. Chilasa slateri tavoyanus ♂ Un.
♂, Tak, Thailand. ♂, Tak, Thailand.
Chilasa slateri tavoyanus ♂ Up. Chilasa slateri tavoyanus ♂ Un. Chilasa slateri tavoyanus ♂ Up. Chilasa slateri tavoyanus ♂ Un.
♂, Tak, Thailand. (photo by A.Giudici) ♂, Tak, Thailand. (photo by A.Giudici)
Chilasa slateri tavoyanus ♂ Up. Chilasa slateri tavoyanus ♂ Un. Chilasa slateri tavoyanus ♂ Up. Chilasa slateri tavoyanus ♂ Un.
♂, Phetchaburi, Thailand. ♂, Phetchaburi, Thailand. (photo by K.Yano)

ON : Papilio tavoyanus Butler, 1882
OD : Ann. Mag. nat. Hist. (5)10:373-374.
TL : Thoungyeen valley, Tenasserim. (♂, NHML)
Distribution : S.Myanmar (Tenasserim and Dawna range),
W. to P.Thailand (Tak to Phetchaburi).
● ssp.slateri
ssp.marginata
transition zone of tavoyanus and marginata
ssp.
ssp.perses
Chilasa slateri tavoyanus map

Synonym

Papilio clarae Marshall, 1882 : J. asiat. Soc. Bengal, Pt.2. 51(2/3):42, pl.4, fig.5,♂. TL. Donat range ; Thoungyeen forests. (♂, NZC)


Type Materials Information

tavoyanus ; ♂, Type (red), Rh10887. 26.Feb.1882. Thoungyeen Valley, Tenasserim. (NHML, examined)
clarae ; ♂, Type, May. Thoungyeen forests. (NZC) ; Sheela et al.,2019 : 275, figs.♂,♂(Un).


Specimens Examined

[ THAILAND ]
Tak : 4♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Phetchaburi : 6♂ (incl.photo by T.Aoyama and M.Hayashi).
Kaeng Krachan dist., 1993.03.19. 1♂, LC (YI).
JanFebMarAprMayJun JulAugSepOctNovDec


Notes

New to Thailand.
The butterfly is locally not rare in montane forest at moderate elevations (alt.700m - 1100m) with a single generation in a year. In flight, it mimics Euploea species (Danainae) very well.
The populations from west to northern part of peninsular Thailand are quite variable and unstable, but in general, the blue markings on the UpF are reduced compared to ssp.slateri and ssp.marginata. I consider this area is a transition zone of ssp.tavoyanus and ssp.marginata. Individuals tend to be smaller in size from north to south. Whether taxon tavoyanus is really a good subspecies or not, we need to examine the variation in populations from Dawna Range to Tenasserim in Myanmar. Further taxonomic study is needed.


Literature

Butler, A.G.,1882 : Descriptions of new Species of Lepidoptera from Tenasserim.
Ann. Mag. nat. Hist. (5)10:372-376.

Marshall, G.F.L.,1882 : Some New or Rare Species of Rhopalocerous Lepidoptera from the Indian Region.
J. asiat. Soc. Bengal, Pt.2. 51(2/3):37-43, pl.4.


Chilasa slateri tavoyanus ♂ Chilasa slateri tavoyanus ♂
♂, Tak, Thailand. ♂, Tak, Thailand.
Chilasa slateri tavoyanus ♂ Chilasa slateri tavoyanus ♂
♂, Phetchaburi, Thailand. (photo by T.Aoyama) ♂, Phetchaburi, Thailand. (photo by T.Aoyama)
Chilasa slateri tavoyanus ♂ Chilasa slateri tavoyanus ♂
2♂ with Euploea, Phetchaburi, Thailand. (photo by M.Hayashi) 2♂, Phetchaburi, Thailand. (photo by M.Hayashi)

2021.12.31 - 2022.11.30.

A Check list of Butterflies in Indo-China, Chiefly from THAILAND, LAOS & VIETNAM. Copyright © 1996- Y.Inayoshi.