♂, Pattani, Thailand.		♂, Pattani, Thailand.
♂, Pattanii, Thailand.		♂, Satun, Thailand.

ON : Euthalia alpheda yamuna Fruhstorfer, 1906 OD : Ins. Borse 23(5):19. TL : Malay Pen. Distribution : P.Thailand (Ranong and Southward), W.Malaysia. ● ssp.verena ● ssp.yamuna ● ssp.langkawica

Euthalia alpheda keda Pendlebury, 1939 : J. fed. Malay St. Mus. 18(3):390. TL.Kedah, Malay Pen. (♂, NHML) (partim)

keda ; Holotype ♂, 14.Mar.1928. Kedah Peak. H.M.Pendlebury (MNHN)

[ THAILAND ]
Euthalia alpheda keda ; Pinratana,1979 : 74, figs.N126b♀,♀(Un). (Ranong; Yala)
Euthalia alpheda yamuna ; Pinratana,1979 : 74, 73, fig.N126c♂ ; 74, figs.N126c♀,♀(Un). (Yala)
Euthalia alpheda yamuna ; Ek-Amnuay,[2007] : 436, pl.192, figs.N143b♂(left),♂(left,Un),♀,♀(Un). (Yala) (in part)
Euthalia alpheda yamuna ; Ek-Amnuay,2012 : 446, pl.196, figs.N309b♂(left),♂(left,Un),♀,♀(Un). (Yala) (in part)
Euthalia alpheda yamuna ; Kimura et al.,2016 : 104, figs.♂,♂(Un). (Khlong Naka)

[ THAILAND ]
Pattani : 3♂.

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Satun : 1♂.

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Yala : 3♂ 2♀ (photo by S.Atdhabhan).

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The butterfly is locally not rare in montane forest at low to moderate elevations (Alt.30m - 900m).
According to Eliot,1980, Pendlebury,1939 described ssp.keda from a male holotype from Kedah Peak and a female allotype from Langkawi Is., which belong to two different taxa. Thus He regarded ssp.keda as a synonym of ssp.yamuna and described ssp.langkawica from Langkawi population.

Fruhstorfer, H.,1906 : Neue Euthaliidae.
Ins. Borse 23(5):18-19.

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

Eliot, J.N.,1980 : New Information on the Butterflies of the Malay Peninsula.
Malay. Nat. J. 33(3/4):137-155.

♂, Yala, Thailand. (photo by S.Atdhabhan)	♀, Yala, Thailand. (photo by S.Atdhabhan)
♂, Yala, Thailand. (photo by S.Atdhabhan)	♀ with E.monina, Yala, Thailand. (photo by S.Atdhabhan)
♂, Yala, Thailand. (photo by S.Atdhabhan)	♂, Yala, Thailand. (photo by S.Atdhabhan)

2007.02.10 - 2021.10.31.