♂, Mae Hong Son, Thailand.		♀, Kanchanaburi, Thailand.
♂, Phetchabun, Thailand.		♂, Chonburi, Thailand.

ON : Nacaduba sivoka Evans, 1910 OD : J. Bombay nat. Hist. Soc. 20(2):427. TL : Sivoke, Teesta Valley, Sikkim, [N.India]. (NHML) Distribution : Nepal, India (Sikkim) to Myanmar, Thailand, Cambodia, Laos, Vietnam, Yunnan, W.Malaysia, Singapore.

[ THAILAND ]
Nacaduba dubiosa sivoka ; Godfrey,1927 : 125. (N)
Nacaduba dubiosa sivoka ; Godfrey,1930 : 323. (Prae: Me Song forest; Bangkok)
Prosotas lutea sivoka ; Pinratana,1981 : 66, pl.11, fig.1,♂(Un). (Chiang Mai; Kanchanaburi; Nakhon Nayok; Nakhon Ratchasima)
Prosotas lutea sivoka ; Ek-Amnuay,[2007] : 584, pl.265, figs.L147,♂,♂(Un). (Wiang Pa Pao)
Prosotas lutea sivoka ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Prosotas lutea sivoka ; Kimura et al.,2014 : 165, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un). (Thung Saleng Luang; Phu Khiewo; Nakohn Nayok; Wan Nam Khiewo; Doi Musso; Sai Yok Noi; Ratchaburi)
Prosotas lutea sivoka ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Phetchabun; Kanchanaburi; Saraburi; Chachoengsao; Chanthaburi; Phetchaburi) (accessed: 2023.05.07)

[ LAOS ]
Prosotas lutea sivoka ; Motono & Negishi,1989 : 72, pl.103, figs.B7,♀,B8,♀(Un). (Luang Prabang)
Prosotas lutea sivoka ; Osada, Uémura & Uehara,1999 : 216, pl.111, figs.♂,♂(Un). (Vang Vieng)
Prosotas lutea sivoka ; Nakamura & Wakahara,2012 : 52.
Prosotas lutea sivoka ; Suwa et al.,2013 : 26. (Thakhek; Phou Phung)
Prosotas lutea sivoka ; Onodera,2022 : 82, pl.212, figs.♀,♀(Un). (Luang Phabang)

[ CAMBODIA ]
Prosotas lutea sivoka ; Chartier & Kosterin,2022 : 121, fig.4F(Un). (Siem Reap)

[ VIETNAM ]
Prosotas lutea sivoka ; Miyazaki, Saito & Saito,2006d : 57, fig.L-63,♀. (Lam Dong: Gung Re)
Prosotas lutea sivoka ; Miyazaki et al.,2010 : 25, fig.L-63,♀[♂]. (Bin Thuan: Dong Thien)
Prosotas lutea sivoka ; Monastyrskii & Devyatkin,2015 : 54. (C: Lam Dong / S)

[ THAILAND ]
Mae Hong Son : 1♂.

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Chiang Mai : 2♂ 2♀ (incl. photo).

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Phrae : 1♂.

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Kanchanaburi : 1♂.

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Phetchabun : 2♂ (incl. photo)

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Chonburi : 1♂.

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Chanthaburi : 3♂.

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The butterfly is locally not rare in montane forests at low to moderate elevation (Alt. 150 - 1000m). Both sexes visit flowers. Males frequently come to the banks of streams and puddles to suck water.

Evans, W.H.,1910 : Additions and corrections to certain local butterfly lists; with the description of a new species.
J. Bombay nat. Hist. Soc. 20(2):423-427.

Tite, G.E.,1963 : A Synonymic List of the Genus Nacaduba and Allied Genera (Lepidoptera: Lycaenidae).
Bull. Br. Mus. nat. Hist. (Ent.) 13(4):69-116, 91 tf, 2 pls. London.

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂, Phetchabun, Thailand.

1999.07.11 - 2023.06.30.