♂, 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. 30 - 900m).
According to Eliot,1980, Pendlebury,1939 described ssp.keda from the male holotype from Kedah Peak and the female allotype from Langkawi Is., which belong to two different taxa. He therefore considered ssp.keda to be synonymous with ssp.yamuna and described ssp.langkawica for the 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.