♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Chanthaburi, Thailand.		♂, Ranong, Thailand.
♂, Yala, Thailand.		♂ genitalia, Ranong, Thailand.

ON : Baoris austeni Moore, [1884] OD : Proc. zool. Soc. Lond. 1883(4):533. TL : Khasia hills. (♂, NHML) Distribution : Nepal, Sikkim, Assam, Myanmar, Thailand, Laos, Vietnam, Hainan, China, Taiwan, W.Malaysia.

Pamphila fallacina Mabille, 1891 : C. R. Soc. ent. Belg. 35:clxxxi. TL. Cherra Pungi. (♀)
Caltoris onchisa Swinhoe, 1893 : Trans. ent. Soc. Lond. 41(3):323. TL. Shillong. (♂, NHML)
Baoris cahira carna Evans, 1926 : J. Bombay nat. Hist. Soc. 31(3):633. TL. Rangoon. (♂, NHML)
Baoris cahira cara Evans, 1932 : Ident. Indian Butts. (2nd ed.) : 413. TL. Manipur. (♂, NHML)

[ THAILAND ]
Parnara austeni ; Godfrey,1916 : 146. (Bangkok; Pak Jong)
'Baoris cahira sirius ; Godfrey,1930 : 386. (Pak Jong; Bangkok)'
Baoris cahira carna ; Davidson & Macbeth,1938 : 93.
Caltoris cahira austeni ; Evans,1949 : 452. (Siam)
Caltoris cahira austeni ; Pinratana,1985 : 113, not fig. (Tak; Chanthaburi)
'Caltoris cahira austeni ; Ek-Amnuay,[2007] : 842, pl.387, fig.H301,♂(Laos).'
Caltoris confusa ; Ek-Amnuay,[2007] : 842, pl.387, figs.H304,♂,♂(Un),♀. (Chiang Mai; Than To)
Caltoris cahira austeni ; Kimura et al.,2011 : 107, figs.♂,♂(Un),♀,♀(Un). (Chiang Dao; Kratching WF; Doi Musso; Ranong Hot Spring; Kam Puan; Khlong Naka; Ka Chong; Than To WF.)
Caltoris confusa ; Kimura et al.,2011 : 107. (by literature)
'Caltoris cahira austeni ; Ek-Amnuay,2012 : 906, pl.419, fig.H298,♂(Laos).'
Caltoris confusa ; Ek-Amnuay,2012 : 908, pl.419, figs.H301,♂,♂(Un),♀. (Chiang Mai; Thanto)
'Caltoris bromus ; Küppers & Janikorn,2017 : 136, figs.Abb.H-297-298. (Phang Nga)'
Caltoris cahira austeni ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, fig. (Nakhon Nayok) (accessed: 2023.10.22)

[ LAOS ]
Caltoris cahira austeni ; Motono & Negishi,1989 : 85, pl.118, figs.A7,♂,A8,♂(Un). (Pakse; Vang Vieng)
Caltoris cahira austeni ; Osada, Uémura & Uehara,1999 : 226, pl.143, fig.♂. (Nam Tha)
Caltoris cahira austeni ; Nakamura & Wakahara,2012 : 60.
Caltoris cahira austeni ; Onodera,2022 : 124, pl.262, figs.♂,♂(Un),♀,♀(Un). (Xiengkhouang: Tha; Phou Samsoum)

[ VIETNAM ]
Parnara austeni ; Godfrey,1919 : 470. (S: Daban)
Parnara nirwana austeni ; Seitz,1927 : 1084. (Tonkin)
Parnara nirwana austeni ; Metaye,1957 : 80. (N)
Parnara cahira ; Metaye,1957 : 80.
Caltoris cahira austeni ; Devyatkin & Monastyrskii,1999 : 179. (Tam Dao; Ba Vi; Ba Be; Cuc Phuong)
Caltoris cahira austeni ; Devyatkin & Monastyrskii,2003 : 131. (S: Cat Tien)
Caltoris cahira austeni ; Luong et al.,2004 : 15, 91, fig.♂. (Cuc Phuong)
Caltoris cahira austeni ; Miyazaki et al.,2010 : 32, fig.H-151,♂. (Lam Dong: Dambri)
Caltoris cahira austeni ; Monastyrskii & Devyatkin,2015 : 85. (N / C: to Lam Dong)

[ THAILAND ]
Mae Hong Son : 1♂.

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Chiang Mai : 3♂ 3♀.

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Phetchabun : 1♂.

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Nakhon Nayok : 1♂ 1♀ (photo by S.Sophonviwatkul).

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Chanthaburi : 1♂.

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Ranong : 4♂.

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Nakhon Si Thammarat : 1♂.

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Yala : 2♂.

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The butterfly is locally not rare in montane forests at low to moderate elevations (Alt. 30 - 1200m). Both sexes visit flowers.
This species can only be distinguished by examination of the male genitalia.

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

Mabille, P.,1891 : Description d'Hesperides nouvelles. Premitere Partie, Deuxieme Partie, Troisieme Partie.
C. R. Soc. ent. Belg. 35:lix-lxxxviii, cvi-cxxi, clxviii-clxxxvii.

Swinhoe, C.,1893 : A List of the Lepidoptera of the Khasia Hills. Part.1.
Trans. ent. Soc. Lond. 41(3):267-330.

Evans, W.H.,1926 : The Identification of Indian Butterflies (9-11).
J. Bombay nat. Hist. Soc. 31(1):49-83, pl.30 ; (2):427-446, pl.31 ; (3):615-637, pl.32.

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

Huang, H.,2011 : Notes on the genus Caltoris Swinhoe1893 and Baoris Moore,[1881] from China (Lepidoptera, Hesperiidae)
Atalanta 42(1-4):201-220.

♂, Chiang Mai, Thailand.

2018.08.31 - 2023.11.30.