♂, Nakhon Nayok, Thailand.		♀, Nakhon Nayok, Thailand.
♂, Kanchanaburi, Thailand.		♂, Houaphan, Laos. (photo by H.Onodera)
♂, Chiang Mai, Thailand.		♂, Chiang Mai, Thailand.
♂, Mae Hong Son, Thailand.		♂ genitalia, Chiang Mai, Thailand.

ON : Horaga moulmeina Moore,[1884] OD : Proc. zool. Soc. Lond. 1883(4):525. TL : Moulmein. (NHML) Distribution : Myanmar, Thailand, Laos, Cambodia, Vietnam. ● ssp.moulmeia ● ssp.maenala

Holotype ♂, Moulmein. (NHML)

[ THAILAND ]
"Horaga halba ; Godfrey,1930 : 346. (Ranong: Kao Pawta Luang Ke)"
Horaga moulmeina ; Davidson & Macbeth,1938 : 83. (C: Paknampho)
"Horaga syrinx moulmeina ; Cowan,1966 : 119. (Ranong, by Godfrey's list)"
"Horaga syrinx moulmeina ; Pinratana,1981 : 125. not fig. (Ranong)"
Horaga syrinx moulmeina ; Ek-Amnuay,[2007] : 678, pl.310, figs.L335,♀[♂],♀[♂](Un). (in part)
Horaga syrinx moulmeina ; Ek-Amnuay,2012 : 716, pl.328, figs.L359,♀[♂](left),♀[♂](left,Un). ("Khao Pota" [recte Mae Hong Son]) (in part)
Horaga syrinx moulmeina ; Kimura et al.,2014 : 102. (by literature)
Horaga syrinx moulmeina ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2018- : Butterflies of Thailand, figs. (Nakhon Nayok)

[ LAOS ]
Horaga onyx onyx ; Osada, Uémura & Uehara,1999 : pl.124, figs.♂,♀(Un),♀. (Vientiane; Xam Neua) (in part)

[ CAMBODIA ]
Horaga syrinx ; Monastyrskii et al.,2011 : 130. (Phnom Samkos W.S.)

[ VIETNAM ]
Horaga syrinx moulmeina ; Miyazaki, Saito & Saito,[2007] : 64, figs.L-112,♂,♀. (Lam Dong: Dambri)

[ THAILAND ]
Mae Hong Son : 2♂.

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Chiang Mai : 3♂.

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Phetchabun : 1♂ (photo).

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Kanchanaburi : 1♂.

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Nakhon Nayok : 3♂ 2♀ (photo & photo by M.Hayashi & S.Sophonviwatkul)

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[ LAOS ]
Houaphan : 1♂ (photo by H.Onodera).

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The butterfly is not rare in the montane forest (alt.700m - 1600m) and is sympatrically distributed with Horaga onyx onyxa. Male makes a territory on the trees at edge of forest or hilltops. Time of male activity is different between the two species. In syrinx from about 11:00 to 14:00 while in onyx from about 14:00 to 16:00.
Cowan,1966 regarded the record of Ranong by Godfrey,1930 as this taxon. However, the possibility of ssp.maenala is also considered and needs to be confirmed by reliable specimens.

Moore, F.,[1884] : Descriptions of new Asiatic Diurnal Lepidoptera.
Proc. zool. Soc. Lond. 1883(4):521-535, pls.48-49.

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

♂, Nakhon Nayok, Thailand.
♂, Nakhon Nayok, Thailand.	♂, Phetchabun, Thailand.

1999.07.18 - 2021.11.30.