♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Kanchanaburi, Thailand.		♂ genitalia, Chiang Mai, Thailand.

ON : Baoris cahira tenuis Evans, 1932 OD : Ident. Indian Butts. (2nd ed.) : 413. TL : Ataran, Tavoy. (♂, NHML) Distribution : Myanmar (Ataran to Tavoy), Thailand, Laos, Vietnam.

[ THAILAND ]
Baoris tenuis tenuis ; Davidson & Macbeth,1938 : 93. (Lampang)
Caltoris tenuis ; Pinratana,1985 : 113, pl.38, figs.262,♂,♀. (Chiang Mai)
Caltoris tenuis ; Yamaguchi & Aoki,2000 : 251, fig.33,♂. (Mukdahan: Phu Mu)
Caltoris tenuis ; Yamaguchi & Aoki,2002 : 15. (Ubon Ratchathani: Phu Hin Dang; Mukdahan: Ban Lao Kram; Ban Gok Tum)
Caltoris tenuis ; Katsuyama et al.,2005 : 64, fig.34,♀. (Umphang: Tha Sai; Umphang)
Caltoris tenuis ; Ek-Amnuay,[2007] : 842, pl.387, figs.H302,♂,♂(Un). (Chiang Mai)
Caltoris tenuis ; Kimura et al.,2011 : 107, figs.♂,♂(Un),♀,♀(Un). (Doi Suthep; Phu Khiewo; Sai York Noi)
Caltoris tenuis ; Ek-Amnuay,2012 : 908, pl.419, figs.H299,♀,♀(Un). (Chiang Mai)

[ LAOS ]
Caltoris tenuis ; Masui & Uehara,1997 : 6, 5, fig.27,♂,♂(Un). (Louang Phabang)
Caltoris tenuis ; Osada, Uémura & Uehara,1999 : 225, pl.143, fig.♂. (Luang Phrabang)
Caltoris tenuis ; Nimura & Wakahara,2005 : 49. (Namdhua)
Caltoris tenuis ; Nakamura & Wakahara,2012 : 60.

[ VIETNAM ]
Caltoris tenuis ; Devyatkin & Monastyrskii,2002 : 152. (Kon Ka Kinh)
Caltoris tenuis ; Miyazaki, Saito & Saito,2007b : 17, fig.H-125,♂. (Lam Dong: Dambri)
Caltoris tenuis ; Monastyrskii & Devyatkin,2015 : 85. (C: Gia Lai)

[ THAILAND ]
Mae Hong Son : 1♂.

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Chiang Mai : 9♂ 4♀.

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Chaiyaphum : 1♂ (photo by A.Giudici).

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Kanchanaburi : 2♂.

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The butterfly is locally common in montane forests at moderate elevations (Alt. 550 - 1000m). Both sexes visit flowers.

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

♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.
♀ + ♂, Chiang Mai, Thailand.

2018.08.31 - 2023.11.30.