Euthalia merta merta  (Moore, 1859)

Euthalia merta merta ♂ Up. Euthalia merta merta ♂ Un.
♂, Yala, Thailand.

ON : Adolias merta Moore, 1859
OD : Trans. ent. Soc. Lond. (2)5(2/3):72, pl.6, fig.4,♀.
TL : 'China' [Perak]
Distribution : P.Thailand, W.Malaysia, Singapore.
● ssp.
ssp.[alboapicala ?]
Euthalia merta merta map


Euthalia merta simplex Tsukada, 1991 ; Butterflies of the South East Asian Islands. 5:412, 549-550, pl.105, figs.11(HT,♂),12(PT,♂Un),13(PT,♀(Un),14(PT,♀). TL.Malay Pen.

Type Materials Information

merta : Holotype, ♀, (NHML, photo examined.)
simplex : Holotype, ♂, 1987.Dec.25, Cameron Highland, Malaysia. (in coll. E.Tsukada)
Paratypes : 2♂ 2♀, Same locality as holotype.

Records taken from Literature

Euthalia merta milleri ; Pinratana,1979 : 74, 75, fig.N127,♂. (Trang)
Euthalia merta merta ; Pinratana & Eliot,1996 : 76, pl.51, figs.139a♂,♀. (Trang; Satun; Yala)
Euthalia eriphylae chula ; RDPB & DNP,2006-2008 : Butterflies in Hala-Bala Forest, fig.♀. (Narathiwat: Hala Bala) (last update: 2006.12.27 ; accessed: 2024.05.11)
Euthalia merta merta ; Ek-Amnuay,[2007] : 438, pl.192, figs.N144a♀,♀(Un) ; pl.193, fig.N144a♂(Malaysia),♂(Un, Malaysia). (Yala)
Euthalia merta milleri ; Ek-Amnuay,[2007] : 438, pl.193, fig.N144b,♀,♀(Un). (no loc.)
Euthalia merta merta ; Ek-Amnuay,2012 : 446, pl.196, figs.N310a♀,♀(Un). ('Chiang Mai' [recte Peninsular Thailand])
'Euthalia merta milleri ; Ek-Amnuay,2012 : pl.197, figs.N310b♂(Malaysia),♂(Un,Malaysia),♀(Malaysia),♀(Un,Malaysia). (in part)'
Euthalia merta merta ; Kimura et al.,2016 : 105, figs.♂,♂(Un),♀,♀(Un),♀,♀(Un),♀,♀(Un). (Khlong Naka; Thaleban; Than To WF.)
Euthalia merta milleri ; Küppers & Janikorn,2020 : 66-67, fig.Abb.N-419. (Phang Nga)
Euthalia agnis hiyamai ; Küppers & Janikorn,2020 : 67, figs.Abb.N-420-421. (Phang Nga)

Specimens Examined

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

Satun : 1♀.
JanFebMarAprMayJun JulAugSepOctNovDec

Yala : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec


The butterfly is locally not rare in montane forest at low elevations (Alt. 150 - 450m).
Moore,1859, in describing this taxon, gave the type locality as 'China', but Distant,1886, illustrated a female specimen and expressed doubts about the type locality. Subsequently, Fruhstorfer,1906,1913 assumed it to be Malaysia, and Corbet,1945 considered it as Perak, Malaysia which I have followed. I tentatively treat all populations from P.Thailand to Singapore as the same taxon, however, further taxonomic study is needed.


Moore, F.,1859 : A Monograph of the Genus Adolias, a Genus of Diurnal Lepidopotera belonging to the Family Nymphalida.
Trans. ent. Soc. Lond. (2)5(2/3):62-87, pls.3-9.

Distant, W.L.,1886 : Rhopalocera Malayana : a Description of the Butterflies of the Malay Peninsula.
1-481, pl.1-27,27A,27B,28-44.

Fruhstorfer, H.,1906 : Neue Euthaliiden.
Soc. ent. 20(19):148-149.

Fruhstorfer, H.,1913 : Familie: Nymphalidae in Seitz, Grossschmett Erde.

Corbet, A.S.,1945 : The Species of the Aconthea Group of the Genus Euthalia HBN. (Lepidoptera: Nymphalidae).
Entomologist 78:177-183, 9 figs.

Tsukada, E.,1991 : Butterflies of the South East Asian Islands V, Nymphalidae (II).
Azumino Butterflie's Research Institute. 576pp.(238 col. pls.) (in Japanese)

Eliot, J.N. & Kirton, L.G.,2000 : Revisional notes and nomenclatural changes of some Peninsular Malaysian butterflies
Malay. nat. J. 54(2):131-145.

Euthalia merta merta ♂ Euthalia merta merta ♀
♂, Yala, Thailand. (photo by S.Atdhabhan) ♀, Yala, Thailand. (photo by S.Atdhabhan)
Euthalia merta merta ♂ Euthalia merta merta ♀
♂, Nakhon Si Thammarat, Thailand. (photo by A.Giudici) ♀, Nakhon Si Thammarat, Thailand. (photo by A.Giudici)
Euthalia merta merta ♂ Euthalia merta merta ♀
♂, Yala, Thailand. (photo by S.Atdhabhan) ♀, Yala, Thailand. (photo by S.Atdhabhan)
Euthalia merta merta ♂ Euthalia merta merta ♀
♂, Yala, Thailand. ♀, Satun, Thailand. (photo by A.Giudici)

2007.02.10 - 2024.05.31.

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