Euthalia phemius ipona  Fruhstorfer, 1913

Euthalia phemius ipona ♂ Up. Euthalia phemius ipona ♂ Un. Euthalia phemius ipona ♀ Up. Euthalia phemius ipona ♀ Un.
♂, Satun (Koh Tarutao), Thailand. ♀, Satun (Koh Tarutao), Thailand.
Euthalia phemius ipona ♂ Up. Euthalia phemius ipona ♂ Un. Euthalia phemius ipona ♂ Up. Euthalia phemius ipona ♂ Un.
♂, Pattani, Thailand. ♂, Ranong, Thailand.

ON : Euthalia phemius ipona Fruhstorfer, 1913
OD : in Seitz, Grossschmett Erde 9:675.
TL : Perak. (♂, NHML)
Distribution : P.Thailand (Ranong and Southward),
Langkawi, W.Malaysia.
● ssp.phemius
Euthalia phemius ipona map


Euthalia phemius corbeti Pendlebury, 1939 : J. Fed. Malay St. Mus. 18(3):389-390, pl.6, fig.15,♂. TL. Langkawi Islands, Malaya. (♂, NHML)

Type Materials Information

ipona : Syntype ♂, 'Cunong Ijan', Perak, Malaysia (NHML) ; Yago et al.,2012 : 306, figs.3A♂,3B♂(Un).
corbeti : Holotype ♂, Langkawi Islands, Malaya. (NHML)

Records taken from Literature

Euthalia ipona ; Pinratana,1979 : 76, figs.N132,♂,♀,♀(Un). (Nakhon Sri Thammarat; Satun; Ranong; Yala)
Euthalia ipona ; Pinratana & Eliot,1996 : 78, pl.78, figs.144,♂,♀. (Nakhon Sri Thammarat; Satun; Ranong; Tarutao Is.)
Euthalia ipona ; Ek-Amnuay,[2007] : 442, pl.195, figs.N151,♂,♂(Un),♂(Un),♀,♀(Un). (Koh Tarutao; Muang Shone)
Euthalia ipona ; Les Day,2011-2022 : Samui Butterflies, figs.♂,♀,♀(Un). (Koh Samui; Koh Phangan) (accessed: 2021.07.23)
Euthalia ipona ; Ek-Amnuay,2012 : 452, pl.199, figs.N317,♂,♂(Un),♂(Un),♀,♀(Un). (Koh Tarutao; Muang Shone)
Euthalia phemius phemius ; Kimura et al.,2016 : 107, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Khlong Naka; Tarutao; Than To WF.) (in part)
Euthalia phemius ipona ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2024- : Butterflies of Thailand, figs. (Krabi) (accessed: 2024.05.13)

Specimens Examined

Ranong : 2♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Surat Thani (Koh Phangan dist.) : 1♂ (photo by A.Giudici).
JanFebMarAprMayJun JulAugSepOctNovDec

Nakhon Si Thammarat : 1♂ 1♀ (photo & photo by A.Giudici).
JanFebMarAprMayJun JulAugSepOctNovDec

Pattani : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Satun (Koh Tarutao) : 2♂ 1♀.
JanFebMarAprMayJun JulAugSepOctNovDec


The butterfly is not uncommon in montane forest at low to moderate elevations (Alt. 30 - 550m).
Yago et al.,2012 identified ipona as a form of the nominotypical subspecies based on both morphology and molecular analysis. However, in peninsular Thailand, only the ipona form is found in both males and females, and these are stable. In the Malay Peninsula, individuals that are indistinguishable from the nominotypical subspecies seem to occur very rarely in mountainous areas. It is possible that this is a regressed and relict form inhabiting mountainous areas, whereas ipona may be a population inhabiting mainly lowland areas. The ratio of these forms to each other needs to be examined. I tentatively treat the populations from P.Thailand to W.Malaysia as ssp.ipona. Further taxonomic study is needed.


Fruhstorfer, H.,1913 : 6. Familie: Nymphalidae in Seitz, Gross-Schmett. Erde 9
665-680. (13.Jan.1913)

Pendlebury, H.M.,1939 : Notes on some new or little-known Malaysian Butterflies
J. Fed. Malay St. Mus. 18(3):380-394, pl.6.

Yago, M., Yokochi, T., Kondo, M., Braby, M.F., Yahya, B., Peggie, D., Wang, M., Williams, M., Morita, S. & Ueshima, R.,2012 :
Revision of the Euthalia phemius complex (Lepidoptera: Nymphalidae) based on morphology and molecular analyses
Zool. J. Linn. Soc. 164:204-324.

Euthalia phemius ipona ♂ Euthalia phemius ipona ♀
♂, Surat Thani (Koh Phangan), Thailand. (photo by A.Giudici) ♀, Nakhon Si Thammarat, Thailand. (photo by A.Giudici)
Euthalia phemius ipona ♂
♂, Nakhon Si Thammarat, Thailand.

2007.02.10 - 2024.05.31.

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