♂, Mae Hong Son, Thailand.		♀, Chiang Mai, Thailand.
♂, Tak, Thailand.		♀, Chiang Mai, Thailand.
♂, Ranong, Thailand.		♀, Ranong, Thailand.
♂, Nan, Thailand.		♂, Nan, Thailand.
♂, Lam Dong, Vietnam. (photo by K.Saito)		♂, Lam Dong, Vietnam. (photo by K.Saito)

ON : Rohana parisatis pseudosiamensis Nguýen-Phung, 1985 OD : Nouv. Revue Ent. (N.S) : 178. TL : "Hinlap, Siam" [Hin Lap, Saraburi, Thailand]. (MNHN) Distribution : S.Yunnan, Thailand, Laos, Cambodia, C. to S.Vietnam. ● ssp.pseudosiamensis ● ssp.staurakius

Holotype ♂, Hinlap, [Saraburi], Siam. (MNHN) : Allotype ♀, Hinlap, [Saraburi], Siam. (MNHN).
Paratypes :
1♂ 1♀, Hinlap, [Saraburi], Siam. (MNHN) ; 1♂ 1♀, Muok Lek, [Saraburi], Siam. (MNHN) ;
1♂, Pang Yao, 20m W. of Raheng, W.Siam. Maj.Stockley leg. (NHML) ; 1♂, Doi Suthep, [Chiang Mai]. (NHML)

[ THAILAND ]
Apatura parisatis siamensis: Godfrey,1916 : 132.
Apatura parisatis siamensis: Pendlebury,1923 : 41. (Nakhon Sri Thammarat: Khao Luang)
Apatura parisatis siamensis: Godfrey,1927 : 124. (N)
Apatura parisatis siamensis: Godfrey,1930 : 297. (Prae: Me Song fores; Pak Jong; Muak Lek; Nakhon Sri Thammarat; W: Pan Yao)
Apatura parisatis siamensis: Godfrey,1932a : 270. (P)
Apatura parisatis siamensis: Pinratana,1979 : 89, figs.N153,♂,♀. (Chiang Mai; Chaiyaphum; Phitsanulok; Nakhon Ratchasima; Saraburi; Tak)
Rohana parisatis siamensis: Pinratana & Eliot,1996 : 86, pl.64, figs.♂,♂(Un),♀. (Chiang Mai; Chaiyaphum; Phitsanulok; Nakhon Nayok; Nakhon Ratchasima; Chanthaburi; Saraburi)
Rohana parisatis siamensis: Yamaguchi & Aoki,2000 : 256, fig.113,♂. (Mukdahan: Phu Mu)
Rohana parisatis pseudosiamensis: Yamaguchi & Aoki,2002 : 31. (Mukdahan: Ban Na Lak)
Rohana parisatis pseudosiamensis: Yamaguchi, Aoki & Akiyama,2005 : 52. (Ubon Ratchathani: Phu Phung)
Rohana parisatis pseudosiamensis: Ek-Amnuay,[2007] : 466, pl.207, figs.N177,♂,♂(Un),♀,♀(Un). (Kaeng Krachan)
Rohana parisatis pseudosiamensis: Les Day,2011–2022 : Samui Butterflies, figs.♂,♂(Un),♀,♀(Un). (Koh Samui) (accessed: 2021.09.26)
Rohana parisatis pseudosiamensis: Ek-Amnuay,2012 : 488, pl.217, figs.N361,♂,♂(Un),♀,♀(Un). (Kaeng Krachan)
Rohana parisatis pseudosiamensis: Sophonviwatkul et al.,2015– : Butterflies of Thailand, figs., Early Stages. (Phitsanulok; Phetchabun; Chaiyaphum; Sa Kaeo; Nakhon Nahok; Chanthaburi) (accessed: 2023.04.27)
Rohana parisatis pseudosiamensis: Kimura et al.,2016 : 123, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un). (Chiang Dao; Doi Phui; Doi Suthep; Khun Lao; Doi Pa Chang; Thung Saleng Luang; Phu Khiewo; Kao Yai; Saraburi; Wan Nam Khiewo; Kao Soi Dao; Doi Musso; Khao Khiewo; Than To WF.)
Rohana parisatis pseudosiamensis: K. Chaianunporn & T. Chaianunporn,2019 : 86. (Chaiyaphum: Chulabhorn Dam)
Rohana parisatis parisatis: Masui,2025 : 240, 242. (N.Thailand)
Rohana parisatis pseudosiamensis: Masui,2025 : 240, 242, pl.65, figs.♂,♂(Un). (C. to S.Thailand)

[ LAOS ]
Rohana parisatis f. siamensis: Dubois & Vitalis,1924 : 44. (Laos)
Rohana parisatis: Koiwaya & Wakahara,1998 : 12, figs.58–60(Larva),61–63(Pupa),64,♂. (Nong Het)
Rohana parisatis pseudosiamensis: Osada et al.,1999 : 208, pl.73, figs.♂,♂(Un),♀. (Vang Vieng; Oudomxay)
Rohana parisatis pseudosiamensis: Nakamura & Wakahara,2012 : 47.
Rohana parisatis pseudosiamensis: Onodera,2022 : 48, pl.143, figs.♂,♂(Un),♀,♀(Un). (Xiengkhouang: Muang Kham; Khammouan: Ban Lao)
Rohana parisatis pseudosiamensis: Masui,2025 : 240, 242, pl.65, figs.♂(ws),♂(ws,Un),♂(ds),♂(ds,Un). (C.Laos)

[ CAMBODIA ]
Rohana parisatis pseudosiamensis: Monastyrskii et al.,2011 : 129. (Phnom Samkos W.S.)
Rohana parisatis pseudosiamensis: Chartier & Kosterin,2022 : 119. (Pursat; Siem Reap)

[ VIETNAM ]
Rohana parisatis staurakius: Miyazaki et al.,2006b : 32, figs.N-105,♂,♀. (Lam Dong: Dambri; Dai Duc Me)
Rohana parisatis pseudosiamensis: Monastyrskii & Devyatkin,2015 : 43. (C; S)
Rohana parisatis pseudosiamensis: Monastyrskii,2019 : 4(1):51–53. (C: Ba To; Chu Yang Sin; Krong Trai; Hon Ba; Loc Bac; Bao Lam; Cat Loc; S: Nam Cat Tien)

[ THAILAND ]
Mae Hong Son : 8♂ 1♀.

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Chiang Mai : 10♂ 3♀ (incl. photo).

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Lampang : 4♂ (photo).

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Phrae : 2♂ (photo).

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Nan : 6♂.

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Loei : 2♂ (photo).

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Phitsanulok : 1♂ 1♀ (photo by T.Laola).

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Phetchabun : 3♂ (photo).

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Chaiyaphum : 1♂ (photo).

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Tak : 6♂ 2♀.

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Nakhon Nayok : 1♂ 1♀ (photo).

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Chanthaburi : 2♂ 3♀.

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Phetchaburi : 1♂.

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Ranong : 2♂ 2♀.

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Surat Thani (Koh Phangan dist.) : 1♂ (photo by E.Ikari).

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[ LAOS ]
Bolikhamxai : 1♀ (photo by H.Onodera).

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Vientiane : 1♂.

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[ VIETNAM ]
Lam Dong : 10♂ 4♀.

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The butterfly is common in forests at low to moderate elevations (250–1,500m a.s.l.) and is frequently found sympatric with Rohana tonkiniana. Males are frequently observed mud-puddling along stream banks and at puddles.
Masui (2025) treated the population from N. Thailand as the nominate subspecies. However, this should be considered a variation of ssp.pseudosiamensis. Here, I follow the conventional classification. Further taxonomic study is needed.

Nguýen-Phung, T, 1985. Systématique évolutive et biogéographie du genre Rohana Moore (Lepidoptera, Nymphalidae).
Nouvelle Revue d'Entomologie (N.S.), 2(2): 175–191.

Masui, A, 2025. Emperor Butterflies of the World. An illustrated Monograph of the Subfamily Apaturinae.
Hokkaido University Press, Sapporo, i–xi + 358 pp., (172 pls.).

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

2007.09.20 - 2026.06.30.