♂, Nan, Thailand.		♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Phetchaburi, Thailand. (photo by K.Yano)		♀, Kanchanaburi, Thailand.

ON : Parnara watsonii Nicéville, 1890 OD : J. Bombay nat. Hist. Soc. 5: 223-224. TL : "Tilin Yaw, Upper Burma" [Tilin Yaw, Magway Region, Myanmar]. (NZC) Distribution : Myanmar (Magway Region to Kayin State), Thailand, Laos, Vietnam.

♂ Type, 02.Mar.1890. Tilin Yaw, Burma. (NZC) ; ♀ Type, 11.Mar.1890. Tilin Yaw, Burma. (NZC) ; Sheela et al.,2019 : 34, figs.♂,♂(Un),♀,♀(Un).

[ THAILAND ]
Iton watsoni [sic] ; Godfrey,1930 : 385. (Prae: Me Song forest; Kanburi)
Iton watsonii ; Evans,1949 : 458. (Siam)
Iton watsonii ; Pinratana,1985 : 115, pl.39, figs.270,♂,♀,♂(Un). (Chiang Mai)
Iton watsonii ; Yamaguchi, Aoki & Akiyama,2005 : 45, fig.8,♂. (Mukdahan: Phu Hin Khan)
Iton watsonii ; Katsuyama et al.,2005 : 64, fig.36,♂. (Umphang)
Iton watsonii ; Katsuyama et al.,2006 : 45, fig.22,♀. (Nan: Ban Nam Poon)
Iton watsonii ; Ek-Amnuay,[2007] : 844, pl.388, figs.H311,♂,♀,♀(Un). (Chiang Mai)
Iton watsonii ; Kimura et al.,2011 : 109, figs.♂,♂(Un),♀,♀(Un). (Doi Suthep; Maethro; Doi Pa Chang; Kaeng Chaei; Sai York Noi)
Iton watsonii ; Ek-Amnuay,2012 : 909, pl.420, figs.H308,♂,♀,♀(Un). (Chiang Mai)
Iton watsonii ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Iton watsonii ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Kanchanaburi; Ratchaburi) (accessed: 2023.10.22)

[ LAOS ]
Iton watsonii ; Masui & Uehara,1997 : 6, 5, figs.30,♂,♂(Un),♀,♀(Un). (Saravan)
Iton watsonii ; Osada, Uémura & Uehara,1999 : 226, pl.143, figs.♂,♀(Un). (Saravan)
Iton watsonii ; Nakamura & Wakahara,2012 : 60.
Iton watsonii ; Onodera,2022 : 126, pl.263, figs.♂,♂(Un),♀,♀(Un). (Oudomxai)

[ VIETNAM ]
Iton watsonii ; Miyazaki, Saito & Saito,2007b : 18, figs.H-132,♂,♀. (Bin Thuan: Dong Tien)
Iton watsonii ; Devyatkin,2012 : 154. (by literature)
Iton watsonii ; Monastyrskii & Devyatkin,2015 : 85. (C: Lam Dong)

[ THAILAND ]
Mae Hong Son : 1♂.

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Chiang Mai : 8♂ 5♀ (incl. photo).

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Nan : 1♂.

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Kanchanaburi : 2♀.

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Phetchaburi : 1♂.

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The butterfly is locally common in montane forests at low to moderate elevations (Alt. 350 - 1300m). Both sexes visit flowers.

Nicéville, L. de,1890 : On new and little-known butterflies from the Indian region, with description of three New genera of Hesperidae.
J. Bombay nat. Hist. Soc. 5(3): 199-225, pls.D,E.

♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.

2018.08.31 - 2025.01.31.