♂, Chanthaburi, Thailand. (photo by K.Yano)		♀, Nakhon Nayok, Thailand.
♂. Nan. Thailand.		♂ genitalia, Nakhon Nayok, Thailand.

ON : Choaspes plateni furcata Evans, 1932 OD : Ident. Indian Butts. (2nd ed.) : 321. TL : 'Sikkim; Manipur' [Sikkim]. (NHML) Distribution : Nepal, Sikkim, Assam, Manipur, Myanmar, Thailand, Laos, Vietnam, Hainan, China, W.Malaysia.

Rhopalocampta smilacis Mell, 1950 : Bonn. zool. Beitr. 1:86-87, Abb.1, fig.2(♂genitalia). TL. Mahn Tsi Shan, "Nordkuangtung" [N.Guangdong].

furcatus  ; Holotype ♂, H2515, [India], 'V.4.27, Teesta, Sikkim, W.H.Evans' (NHML)

[ THAILAND ]
Choaspes hemixanthus furcatus ; Evans,1949 : 77. (Siam)
Choaspes hemixanthus furcatus ; Pinratana,1985 : 23, pl.7, fig.26,♂. (Chiang Mai)
Choaspes hemixanthus furcata ; Tsukiyama,1992 ; 29, pl.4, fig.5-1a♂. (Chiang Dao)
Choaspes furcatus ; Ek-Amnuay,[2007] : 742, pl.340, figs.H32,♂,♂,♀,♀,♀(Un). (Khao Yai)
Choaspes hemixanthus furcatus ; Chiba,2009 : 42-43, pl.19, figs.10,♂,11,♀. (Chantaburi; Chiang Dao)
Choaspes furcatus ; Kimura et al.,2011 : 30, figs.♂,♂(Un). (Doi Suthep)
Choaspes furcatus ; Ek-Amnuay,2012 : 788, pl.364, figs.H31,♂,♂(Un),♀,♀,♀(Un). (Khao Yai)
Choaspes furcatus ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs, Early Stages. (Nakhon Nayok) (accessed: 2023.03.26)

[ LAOS ]
Choaspes furcatus ; Masui & Uehara,1999 : 19,22, figs.21,♂,♂(Un). (Phong Sali)
Choaspes furcatus ; Osada, Uémura & Uehara,1999 : 221, pl.132, figs.♂,♂(Un). (Phong Saly)
Choaspes hemixanthus furcatus ; Chiba,2009 : 42-43, pl.19, figs.10,♂,11,♀. (Laos)
Choaspes furcatus ; Nakamura & Wakahara,2012 : 57.
Choaspes furcatus ; Onodera,2022 : 103, pl.238, figs.♂,♂(Un),♀,♀(Un). (Xiengkhouang: Tham Piou; near Tong)

[ VIETNAM ]
Choaspes hemixanthus furcata ; Devyatkin & Monastyrskii,1999 : 157. (N: Cao Bang; Tam Dao)
Choaspes hemixanthus furcata ; Luong et al.,2004 : 12. (Cuc Phuong)
Choaspes furcatus ; Monastyrskii et al.,2006 : 44. (Thua Thien Hue: Huong Thuy)
Choaspes furcatus ; Miyazaki, Saito & Saito,2007b : 3, fig.H-13,♂. (Lam Dong: Dambri)
Choaspes hemixanthus furcatus ; Chiba,2009 : 42-43, pl.19, figs.10,♂,11,♀. (N / C)
Choaspes furcatus ; Monastyrskii & Devyatkin,2015 : 71. (N / C)

[ THAILAND ]
Nan : 1♂.

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

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Chanthaburi : 1♂.

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[ LAOS ]
Xieng Khouang : 1♂ 1♀ (photo by H.Onodera).

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[ VIETNAM ]
Lao Cai : 1♂.

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Vinh Phuc : 1♂.

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Lam Dong : 3♂ 2♀.

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The butterfly is locally not rare in montane forests at moderate elevations (Alt. 500 - 1300m). Both sexes visit flowers.
This species can be distinguished from allied species, particularly benjamini and xanthopogon, by examination of the male genitalia.

Evans, W.H.,1932 : The identification of Indian butterflies. second edition revised.
Bombay nat. Hist. Soc., Madras : 10+454pp, 32 pls, 9f.

Evans, W.H.,1949 : A catalogue of the Hesperiidae from Europe, Asia and Australia in the British Museum (Natural History).
i-xix+1-502, pls.1-35. London.

Mell, R.,1950 : Artbildung durch physiologische Differenzierung (chemotaktische Antizipation) in der Gattung Rhopalocampta Wall. (Lepidopt.,Hesperidae)
Bonn. zool. Beitr. 1:86-91.

♂, Nakhon Nayok, Thailand. (photo by S.Sophonviwatkul)	♀ (laying egg), Nakhon Nayok, Thailand. (photo by M.Hayashi)

1999.07.31 - 2023.04.30.