ON : Horaga amethystus purpurescens Corbet, 1941 OD : Proc. R. ent. Soc. Lond. (B)10(3): 47-48. TL : Port Dickson, Negri Sembilan, Malay Peninsula. (FMSM) Distribution : S.Myanmar (Tanintharyi Region), P.Thailand (Ranong), W.Malaysia, Sumatra, Borneo. ● ssp.detanii ● ssp.purpurescens

Holotype, ♂, 9.Jan.1938. Port Dickson, Negri Sembilan, Malay Peninsula. (FMSM, photo examined.)
Allotype, ♀, 28.Sep.1932. Bukit Kutu, 3300ft., Selangor, Malay Peninsula. H.M.Pendlebury (Selangor Museum)
Paratypes : 1♀, type (PT), 1929-1931, Malay Peninsula, H.Gunnery (NHML, photo examined.) ; 1♀, Dec.1923, King Is., Mergui, W.H.Evans (NHML, photo examined.)

[ MYANMAR ]
Tanintharyi Region : 1♀, Paratype, Dec.[19]23, "King Is., Mergui" [Kadan Kyun, Tanintharyi Region], W.H.Evans (NHML, photo examined).

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[ THAILAND ]
Ranong : 2♀, without date, "Renong, Siam" [Ranong, P.Thailand], W.Doherty (NHML, photo examined).

[ THAILAND ]
Horaga amethysta purpurescens ; Cowan,1966 : 131. (Ranong)
Horaga amethysta purpurescens ; Pinratana,1981 : 125. not fig. (Ranong)
'Horaga amethysta purpurescens ; Ek-Amnuay,2012 : 718, pl.328, figs.360,♀(Malaysia),♀(Malaysia,Un).' (photo adapted from Eliot, 1992)
Horaga amethysta purpurescens ; Kimura et al.,2014 : 102. (by literature)
Horaga amethysta purpurescens ; Inayoshi,1999-2022 : Butterflies in Indo-China. (by literature) (31.Jul.2022 last updated ; 31.Jan.2026 changed.)
Horaga purpurescens purpurescens ; Saito & Inayoshi,2026 : 12, figs. 17d♀,17d-v♀(Un),17e♀,17e-v♀(Un). (Ranong).

The species is rare. Hitherto, only two specimens are known from Ranong, Thailand.

Corbet, A.S.,1941 : A Revision of the Malayan Species of Horaga Moore. (Lepidoptera: Lycaenidae).
Proc. R. ent. Soc. Lond. (B)10(3): 46-50, 6 figs.

Cowan, C.F.,1966 : Indo-oriental Horagini (Lepidoptera : Lycaenidae).
Bull. Brit. Mus. nat. Hist. (Ent.) 18(4): 103-141, 3 pls.

Saito, K. & Inayoshi, Y.,2026 : Notes on Horaga amethystus H. H. Druce, 1902 and its allies (Lepidoptera, Lycaenidae, Lycaeninae).
Butterflies 98: 4-19.

2026.02.28.