♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.		♀, Bangkok, Thailand.
♂, Trat, Thailand.		♀, Vinh Phuc, Vietnam.

ON : Cethosia cyane euanthes Fruhstorfer, 1912 OD : in Seitz, Grossschmett Erde 9:503. TL : Indo-China ('Tonkin [N.Vietnam]; Annam [C.Vietnam]; Siam [Thailand]'). Distribution : Myanmar, Andaman, Thailand, Laos, Cambodia, Vietnam, S.China, Langkawi, W.Malaysia, Singapore.

Cethosia cyane euanthes f. cidaris Fruhstorfer, 1915 : Ent. Rund. 32(1):6. TL. 'Bangkok; Kanburi, Siam [Bangkok; Kanchanaburi, Thailand]'.

[ THAILAND ]
Cethosia cyane ; Fruhstorfer,1906 : 330. (Bangkok; M. & W.Siam)
Cethosia cyane euanthes ; Fruhstorfer,1912 : 503. (Siam)
Cethosia cyane euanthes ; Godfrey,1916 : 126.
Cethosia cyane euanthes ; Godfrey,1927 : 123. (N)
Cethosia cyane euanthes ; Godfrey,1930 : 270. (Muak Lek; Chonburi: Sriracha; Bangkok; Me Wong)
Cethosia cyane euanthes ; Pinratana,1979 : 19, figs.N28,♂,♂(Un),♀. (Bangkok; Nonthaburi; Tak; Chanthaburi; Ratchaburi)
Cethosia cyane euanthes ; Pinratana & Eliot,1996 : 18, pl.3, figs.5,♂,♀,♂(Un). (Chaiyaphum; Tak; Bangkok; Chanthaburi; Ratchaburi; Ranong)
Cethosia cyane euanthes ; Yamaguchi & Aoki,2000 : 254, fig.86,♂. (Ubon Ratchathani: Kaeng Tana; Mukdahan: Phu Sa Duak Bua; Phu Huay Sing)
Cethosia cyane euanthes ; Yamaguchi & Aoki,2002 : 25. (Ubon Ratchathani: Phu Chong Na Yoi; Nam Tok Soi Sawan; Kaeng E-Keow; Mukdahan: Ban Lao Kram; Phu Huay Sing; Nam Tok Kham Cha I; Ban Gok Tum)
Cethosia cyane euanthes ; Yamaguchi, Aoki & Akiyama,2005 : 49. (Mukdahan: Ban Lao Kram; Phu Hin Khan; Ubon Ratchathani: Phu Chong Na Yoi)
Cethosia cyane euanthes ; Katsuyama et al.,2005 : 69, fig.137,♂. (Umphang)
Cethosia cyane euanthes ; Katsuyama et al.,2006 : 49, fig.105,♂. (Nan: Ban Nam Poon)
Cethosia cyane euanthes ; RDPB & DNP,2006-2008 : Butterflies in Hala-Bala Forest, fig.♂. (Narathiwat: Hala Bala) (last update: 2006.12.25 ; accessed: 2024.05.11)
Cethosia cyane euanthes ; RDPB & DNP,2006-2008 : Butterflies in Hala-Bala Forest, fig.♀. (Narathiwat: Hala Bala) (last update: 2006.12.25 ; accessed: 2024.05.11)
Cethosia cyane euanthes ; Ek-Amnuay,[2007] : 352, pl.150, figs.N5,♂,♂(Un),♀,♀(Un). (Bangkok)
Cethosia cyane euanthes ; Les Day,2011-2022 : Samui Butterflies, figs.♂,♂(Un),♀,♀(Un). (Koh Samui; Koh Phangan) (accessed: 2023.05.02)
Cethosia cyane euanthes ; Ek-Amnuay,2012 : 380, pl.163, figs.N208,♂,♂(Un),♀,♀(Un). (Bangkok)
Cethosia cyane euanthes ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs., Early Stages. (Phetchabun; Sa Kaeo; Nakon Nayok; Bangkok; Chachoengsao; Phetchaburi) (accessed: 2023.05.02)
Cethosia cyane euanthes ; Kimura et al.,2016 : 45, figs.♂,♂(Un),♀,♀(Un),♂(Un),♀,♀(Un). (Bung Kahn; Phu Khiewo; Muok Leck; Sarika; Bang Phu; Wan Nam Khiewo; Kao Soi Dao; Pliewn WF; Kratching WF; Kao Chamao; Kao Khiewo; Bang Sarrey; Bangkok; Doi Musso; Mas Sohd; Sai York Noi; Kaeng Chai; Kuwai Yai; Kanchanaburi; Ratchaburi; Khlong Naka)
Cethosia cyane euanthes ; Chaianunporn & Chaianunporn,2019 : 86. (Chaiyaphum: Chulabhorn Dam)
Cethosia methypsea ; Küppers & Janikorn,2020 : figs.Abb.L-151-152. (Phang Nga) (in part)

[ LAOS ]
Cethosia cyane euanthes ; Motono & Negishi,1989 : 54, pl.45, figs.5,♂,6,♂(Un),7,♀,8,♀(Un). (Luang Prabang; Tha Ngone; Vientiane; Nam Moh; Nam Ngum Dam)
Cethosia cyane euanthes ; Osada, Uémura & Uehara,1999 : 205, pl.49, figs.♂,♀. (Phong Saly; Nong Het)
Cethosia cyane euanthes ; Nimura & Wakahara,2005 : 41. (Namdhua; Laksao; Nakai)
Cethosia cyane euanthes ; Onodera,2009b : 42. (Bolikhamxai: Phon Si; Nahin)
Cethosia cyane euanthes ; Nakamura & Wakahara,2012 : 44.
Cethosia cyane euanthes ; Onodera,2022 : 28, pl.95, figs.♂,♂(Un),♀,♀(Un). (Khammouan: Nahin; Lao Luang)

[ CAMBODIA ]
Cethosia cyane ; Onodera,2007 : 28, fig.44,♂. (Siem Reap: Phnum Kuhlen)
Cethosia cyane ; Onodera,2009 : 36. (Mondolkiri: Sen Monorom; Bousra)
Cethosia cyane cyane ; Monastyrskii et al.,2011 : 129. (Phnom Samkos W.S.)
Cethosia cyane euanthes ; Kosterin,2020 : 325. (Siem Reap)
Cethosia cyane euanthes ; Chartier & Kosterin,2022 : 117. (Kampong Chhnang; Kep; Koh Kong; Kampot; Mondulkiri; Preah Sihanouk; Pursat; Preah Vihear; Siem Reap; Stueng Treng; Takeo)

[ VIETNAM ]
Cethosia cyane ; Joannis,1901 : 325. (Tonkin: Cao Bang)
Cethosia cyane ; Fruhstorfer,1906 : 330. (Tonkin / Annam)
Cethosia cyane euanthes ; Fruhstorfer,1912 : 503. (Tonkin / Annam)
Cethosia cyane euanthes ; Moulton,1923 : 130. (Pulo Condore)
Cethosia euanthes ; Lemée,1950 : 11. (Hagiang)
Cethosia cyane euanthes ; Metaye,1957 : 94. (N / C)
Cethosia cyane ; Vu,2003 : 57. (Phu Quoc)
Cethosia cyane euanthes ; Ikeda et al.,2000 : 30, figs.2:12,♂,13,♂(Un),14,♀, fig.9:11(♂,genitalia). (Cuc Phuong)
Cethosia cyane cyane ; Luong et al.,2004 : 5, 56, figs.♂,♂(Un),♀,♀(Un). (Cuc Phuong)
Cethosia cyane ; Monastyrskii et al.,2006 : 40. (Thua Thien Hue: A Luoi)
Cethosia cyane euanthes ; Miyazaki, Saito & Saito,2006b : 15, fig.N-6,♂. (Lam Dong: Dambri; Dong Nai: Thac Mai; Bin Thuan: Ta Cu)
Cethosia cyane euanthes ; Miyazaki, Saito & Saito,2007c : 38, fig.N-6,♀. (Lam Dong: Dambri)
Cethosia cyane cyane ; Monastyrskii & Devyatkin,2015 : 30. (N / C / S)
Cethosia cyane euanthes ; Saito et al.,2017 : 81. (S: Nui Ket)
Cethosia cyane euanthes ; Monastyrskii,2019 : 4(1):166-167, pl.19, figs.2a♂,2b♂(Un),2c♀. (N: Tam Dao; Ba Vi; Cat Ba; Cuc Phuong; Huu Lien; Kim Hy; Pu Luong; Xuan Lien / C: Ben En; Pu Mat; Pu Hoat; Vu Quang; Bach Ma; Son Thanh; Ngoc Linh; Kon Ka Kinh; Krong Trai; Nui Chua; Loc Bac; Bao Lam; Da Teh; Yok Don / S: Binh Chau; Nam Cat Tien; Con Dao)

[ THAILAND ]
Mae Hong Son : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 8♂ 5♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lampang : 1♂ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Bangkok : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chonburi : 2♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chanthaburi : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Trat : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Surat Thani (Koh Phangan) : 2♀ (photo by A.Giudici).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Krabi : 1♀ (photo by T.Sato).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ VIETNAM ]
Vinh Phuc : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lam Dong : 3♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

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Sep

Oct

Nov

Dec

The butterfly is very common in secondary forests and open land at low to moderate elevations (Alt. 10 - 1200m). Both sexes visit flowers and males occasionally come to the banks of streams and puddles to suck water.

Fruhstorfer, H.,1912 : 6. Familie: Nymphalidae in Seitz, Gross-Schmett. Erde 9
497-504. (15.Apr.1912)

Fruhstorfer, H.,1915 : Rhopaloceren aus Cochin-China. II
Ent. Rund. 32(1):6. (23.Jan.1915)

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♂, Lampang, Thailand.	♀, Chiang Mai, Thailand.
♀, Surat Thani (Koh Phangan dist.), Thailand. (photo by A.Giudici)	♀, Surat Thani (Koh Phangan dist.), Thailand. (laying eggs) (photo by A.Giudici)
♀, Krabi, Thailand. (photo by T.Sato)

2007.10.20 - 2024.05.31.