♂, 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 ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,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 ; Chaianunporn & 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 pseudosiamensis ; Osada, Uémura & Uehara,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, Saito & Saito,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♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 10♂ 3♀ (incl. photo).

Jan

Feb

Mar

Apr

May

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Jul

Aug

Sep

Oct

Nov

Dec

Lampang : 4♂ (photo).

Jan

Feb

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Apr

May

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Sep

Oct

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Phrae : 2♂ (photo).

Jan

Feb

Mar

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May

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Oct

Nov

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Nan : 6♂.

Jan

Feb

Mar

Apr

May

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Jul

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Sep

Oct

Nov

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Loei : 2♂ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

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Sep

Oct

Nov

Dec

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

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

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Phetchabun : 3♂ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chaiyaphum : 1♂ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

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Dec

Tak : 6♂ 2♀.

Jan

Feb

Mar

Apr

May

Jun

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Sep

Oct

Nov

Dec

Nakhon Nayok : 1♂ 1♀ (photo).

Jan

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Apr

May

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Jul

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Sep

Oct

Nov

Dec

Chanthaburi : 2♂ 3♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phetchaburi : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Ranong : 2♂ 2♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

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

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

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

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Vientiane : 1♂.

Jan

Feb

Mar

Apr

May

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Jul

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Sep

Oct

Nov

Dec

[ VIETNAM ]
Lam Dong : 10♂ 4♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is common in montane forests at low to moderate elevations (Alt. 250 - 1500m) and is frequently found sympatric with Rohana tonkiniana. Males often come to the banks of streams and puddles to suck water.
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).
Nouv. Revue Ent. (N.S.): 175-191.

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

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

2007.09.20 - 2025.12.31.