♂, Nan, Thailand.

ON : Chittira melaneus szechuana Fruhstorfer, 1899 OD : Berl. ent. Z. 44(1/2): 65. TL : "Szechuan" [Sichuan, China]. (NHML) Distribution : India, Myanmar, S.E.Tibet, Yunnan, Sichuan, Chongqing, Guizhou, Thailand, Laos, Cambodia, Vietnam, Guangxi, Hunan.

szechuanus ; Syntypes: 1♂ Syntype (Blue)/(Type/red) ; 1♀ Syntype (Blue)/(Type/red), Sze-Tschuan, China, H.G. Smith. designated by H. Taylor,1988. (NHML, examined) ; Koiwaya & Nishimura,1997 : figs.32,♂(ST), 33,♂(ST,Un), 34,♀(ST), 35,♀(ST,Un).

[ THAILAND ]
Parantica swinhoei szechuana: Koiwaya & Nishimura,1997 : 60,61, figs.5–8, 32–35, 42–43. (Chiang Mai: Doi Pha Hom Pok; Chiang Dao)
Parantica swinhoei szechuana: Ek-Amnuay,[2007] : 190, pl.67, figs.D12,♂,♂(Un),♀[♂],♀(Un)[♂(Un)]. (Chiang Mai: Doi Pha Hom Pok; Chiang Dao; Nan: Doi Phu Kha)
Parantica swinhoei szechuana: Ek-Amnuay,2012 : 190, pl.67, figs.N12,♂,♂(Un),♂,♂(Un). (Doi Phu Kha; Doi Pha Hom Pok; Chiang Dao)
Parantica swinhoei szechuana: Kimura et al.,2016 : 30, figs.♂,♂(Un),♂,♂(Un). (Doi Pha Hom Pok; Chiang Dao)

[ LAOS ]
Danaida melaneus f. szetchuanus: Dubois & Vitalis,1921 : 24. (Laos)
Parantica swinhoei szechuana: Koiwaya & Nishimura,1997 : 60,61, figs.5–8, 32–35, 42–43. (Boli Kham Xai: Laksao; Phong Sali)
Parantica swinhoei szechuana: Osada et al.,1999 : 204, pl.43, fig.♂. (Phong Saly)
Parantica swinhoei szechuana: Nakamura & Wakahara,2012 : 43.
Parantica swinhoei szechuana: Onodera,2022 : 23, pl.81, figs.♂,♂(Un). (Bolikhamxai: Lak Sao)

[ CAMBODIA ]
Parantica swinhoei szechuana: Monastyrskii et al.,2011 : 128. (Phnom Samkos W.S.)
Parantica swinhoei szechuana: Chartier & Kosterin,2022 : 115. (Pursat)

[ VIETNAM ]
Danaida melaneus szetchuanus: Fruhstorfer,1910 : 210. (Tonkin: Manson Mts.)
Danaida szetchuanus: Vitalis,1919 : 221. (Tonkin)
Danaida melaneus f. szetchuanus: Dubois & Vitalis,1921 : 24. (Tonkin)
Danaus melaneus szetchuanus: Metaye,1957 : 101. (N; C)
Danaus melaneus szetchuanus: Metaye,1958a : 157, pl.2, fig.1,♂. (N; C: Blao; Col du Da Troun)
Parantica swinhoei szechuana: Koiwaya & Nishimura,1997 : 60,61, figs.5–8, 32–35, 42–43. (Hoa Binh: Mai Chau; Vinh Phu: Tam Dao; Ninh Binh: Cuc Phuong)
Parantica swinhoei szechuana: Ikeda et al.,1999 : 50, figs.1:14,♂,15,♀,16,♀(Un),9:5(♂genitalia). (Cuc Phuong)
Parantica swinhoei szechuana: Luong et al.,2004 : 3. (Cuc Phuong)
Parantica swinhoei szechuana: Miyazaki et al.,2006 : 15, figs.D-11,♂♀. (Lam Dong: Gung Re; Dai Duc Me)
Parantica swinhoei szechuana: Monastyrskii,2011 : 42–43, pl.3, figs.2a♂,2b♂(Un). (N: Hoang Lien; Ba Be; Tam Dao; Cuc Phuong; C: Vu Quang; Bach Ma; Ngoc Linh; Hon Ba; Da Lat; Bi Doup-Nui Ba; Bao Lam)
Parantica swinhoei szechuana: Yokochi et al.,2015 : 39, figs.32,♂,32v♂(Un). (Khanh Hoa: Hon Ba)
Parantica swinhoei szechuana: Monastyrskii & Devyatkin,2015 : 19. (N; C; S)

[ THAILAND ]
Chiang Mai : 3♂ 1♀ (incl. photo).

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Nan : 1♂.

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[ VIETNAM ]
Tonkin : 1♂ (NHML),

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Nachan : 1♂ (NHML).

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The butterfly is uncommon in forests at moderate to high elevations (1,300–1,800 m a.s.l.). Both sexes visit flowers. Males are occasionally observed mud-puddling along stream banks and at puddles. In some places it occurs sympatrically with Parantica melaneus.

Fruhstorfer, H, 1899. Uebersicht der Indo-Australischen Danaiden und Beschreibung never Formen.
Berliner entomologische Zeitschrift, 44(1/2): 64–87, pl. 2. (mid Jul.1899)

Fruhstorfer, H, 1910. 3. Familie: Danaidae. In: Seitz, A. (Ed.), Die Gross-Schmetterlinge der Erde.
Alfred Kernen, Stuttgart, 9: 191–216. (20.May.1910)

Koiwaya, S. & Nishimura, M, 1997. Confirmation of the status of Parantica melaneus and Parantica swinhoei (Danaidae).
Butterflies, 18: 56–65.

♂, Chiang Mai, Thailand.

1998.11.15 - 2025.04.30.