♂, Nakhon Nayok, Thailand. (photo by S.Sophonviwatkul)		♀, Nakhon Nayok, Thailand. (photo by S.Sophonviwatkul)
♂, Chiang Mai, Thailand.		♀, Nakhon Nayok, Thailand.

ON : Mahathala ameria burmana Talbot, 1942 OD : Proc. R. ent. Soc. Lond. (B)11(8):122. TL : Ataran, Burma. Distribution : Myanmar, Thailand, Laos, Vietnam. ● ssp.burmana ● ssp.? ● ssp.ariadeva

Types ♂♀, Ataran, Haungthraw Valley,

[ THAILAND ]
Mahathala ameria burmana ; Talboe,1942 : 122. (W.Siam)
Mahathala ameria burmana ; Pinratana,1981 : 106, pl.18, fig.13,♂(Un). (Chiang Mai; Kanchanaburi)
Mahathala ameria ameria ; Ek-Amnuay,[2007] : 654, pl.298, figs.L295a♂[♀],♂[♀](Un),♀,♀(Un). (Chiang Dao; Kanchanaburi)
Mahathala ameria burmana ; Ek-Amnuay,[2007] : 654, pl.298, figs.L295b♀,♀(Un). (Wang Nam Khieo)
Mahathala ameria ameria ; Ek-Amnuay,2012 : 690, pl.315, figs.L319a♂[♀],♂[♀],♀,♀(Un). (Chiang Dao; Kanchanaburi)
Mahathala ameria burmana ; Ek-Amnuay,2012 : 690, pl.315, figs.L319b♀,♀(Un). (Wang Nam Khieo)
Mahathala ariadeva burmana ; Kimura et al.,2014 : 88, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Chiang Dao; Wan Nam Khiewo; Thung Yai)
Mahathala ariadeva burmana ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Sa Kaeo; Saraburi; Nakhon Nayok) (accessed: 2023.04.19)

[ LAOS ]
Mahathala ameria ameria ; Motono & Negishi,1989 : 74, pl.105, figs.B5,♂,B6,♂(Un). (Vang Vieng)
Mahathala ameria ameria ; Osada, Uémura & Uehara,1999 : 217, pl.120, fig.♀. (Nong Het)
Mahathala ariadeva ariadeva ; Nakamura & Wakahara,2012 : 54.
Mahathala ariadeva burmana ; Miyamoto & Nakamura,2016 : 25, fig.14,A♂,B♂(Un),C♀,D♀(Un). (Vientiane: Xieng Khouang)

[ VIETNAM ]
Mahathala ameria burmana ; Inoué & Kawazoé,1965 : 382-384, pl.18, figs.139,♂,140,♂(Un). (Ben Nom, Dong Nai)
Mahathala ameria burmana ; Monastyrskii & Devyatkin,2015 : 63. (N / C / S)

[ THAILAND ]
Chiang Mai : 3♂.

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Tak : 1♂ (photo).

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Saraburi : 1♀ (photo by C.Sunthornwiphat).

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Nakhon Nayok : 2♂ 2♀ (incl. photo & photo by S.Sophonviwatkul).

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The butterfly is locally not rare in montane forests at low to moderate elevations (Alt. 300 - 900m). Both sexes visit flowers.
The population from Koh Samui cannot be determined to which subspecies it belongs due to a lack of specimens. Confirmation with specimens is needed.

Talbot, G.,1942 : The races and forms of Mahathala ameria (Hewitson) Lep. Rhop.
Proc. R. ent. Soc. Lond. (B)11(8):120-123.

♂, Tak, Thailand.	♀, Saraburi, Thailand. (photo by C.Sunthornwiphat)
♂ (Ex.Pupa), Nakhon Nayok, Thailand. (photo by S.Sophonviwatkul)

1999.07.18 - 2023.04.30.