♂, Ninh Binh, Vietnam.		♂, Trat, Thailand.
♂, Chanthaburi, Thailand.		♂, Chanthaburi, Thailand.
♂, Vinh Phuc, Vietnam. (photo by K.Saito)		♀, Dong Nai, Vietnam. (photo by K.Saito)

ON : Zetides acheron Moore, 1885 OD : Ann. Mag. nat. Hist. (5)16:120. TL : N.E.Bengal. (NHML) Distribution : India to Myanmar, Thailand, Laos, Cambodia, Vietnam, Hainan, China. ● ssp.acheron ● ssp.mecisteus

Papilio eurypylus acheron f.pluv. cheronus Fruhstorfer, 1903 : Berl. ent. Z. 47(3/4):204. TL. "Chiem-Hoa, Tonkin" [Chiem Hoa, N.Vietnam]; Hinlap, Siam. (partim) (IFS)
Papilio eurypylus juba Fruhstorfer, 1908 : Ent. Zeit. 21(37):222. TL. Hainan. (NHML)
Papilio eurypylus cheronus f.vern. petina Jordan, 1909 : in Seitz, Grossschmett. Erde 9:98. TL. Sikkim; Assam; Burma; Siam; Tonkin; Hainan. (NHML) (IFS)

acheron ; ♂, Type (red), Rh.11107, #149386, Darjiling. (NHML, examined)
juba ; ♂, Type (red), #149403 Hainan, Whitehead. (NHML, examined)
petina ; ♂, Type (red), 9-3.1888. Sikkim. O.Moller. (NHML, examined)

[ THAILAND ]
'Papilio eurypylus axion ab. acheron ; Fruhstorfer,1903 : 203-204. (Kanburi)'
Papilio eurypylus acheron f. cheronus ; Fruhstorfer,1903 : 203-204. (Hinlap)
Papilio eurypylus cheronus ; Jordan,1909 : 98. (Siam)
Papilio eurypylus cheronus ; Godfrey,1916 : 112. (Chonburi: Sriracha)
Papilio eurypylus cheronus ; Godfrey,1930 : 218. (Prae; Muak Lek; Chonburi: Sriracha)
Graphium eurypylus cheronus ; Pinratana,1977 : 57, figs.P46a♂,♂(Un). (except P)
Graphium eurypylus cheronus ; Pinratana & Eliot,1992 : 36,46, pl.66, figs.58a♂,♂(Un). (Chaiyaphum; Chonburi; Nakhon Ratchasima)
Graphium eurypylus cheronus ; Ek-Amnuay,[2007] : 120, pl.32, figs.P67a♂,♂(Un). (Pak Chong)
Graphium eurypylus acheron ; Racheli & Cotton,2009 : 42, figs.♀,♀(Un). (Chanthaburi: Khao Soi Dao)
Graphium eurypylus cheronus ; Kimura et al.,2011 : 138, figs.♂,♂(Un). (Phu Khiewo; Khao Yai; Sarika; Nakohn Nayork; Wan Nam Khiewo; Kao Soi Dao; Khao Khiewo; Khlong Tariew)
Graphium eurypylus acheron ; Ek-Amnuay,2012 : 120, pl.32, figs.P64a♂,♂(Un). (Pak Chong; Pang Sida)
Arisbe eurypylus acheron ; Page & Treadaway,2014 : 259, 265. (Thailand)
Graphium eurypylus acheron ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, figs. (Phetchabun; Sa Kaeo) (accessed: 2023.05.18)

[ LAOS ]
Graphium eurypylus cheronum [sic] ; Motono & Negishi,1989 : 47, pl.10, figs.1,♂,2,♂(Un). (Luang Prabang)
Graphium eurypylus cheronus ; Osada, Uémura & Uehara,1999 : 201, pl.27, figs.♂(dsf),♂(Un),♂. (Vang Vieng; Lak Sao)
Graphium eurypylus cheronus ; Cotton & Racheli,[2007] : 312. (accross the country)
Graphium eurypylus acheron ; Racheli & Cotton,2009 : 43, figs.♂,♂(Un). (Hinboun: Koun Kham valley)
Graphium eurypylus cheronus ; Nakamura & Wakahara,2012 : 42.
Arisbe eurypylus acheron ; Page & Treadaway,2014 : 259, 265. (Laos)
Graphium eurypylus acheron ; Onodera,2022 : 11, pl.54, figs.♂,♂(Un). (Bolikhamxai: Thabok)

[ CAMBODIA ]
Arisbe eurypylus acheron ; Page & Treadaway,2014 : 259, 265. (Cambodia)
Graphium eurypylus acheron ; Chartier & Kosterin,2022 : 113, fig.1A♂. (Koh Kong)

[ VIETNAM ]
Papilio eurypylus ; Joannis,1901 : 334. (Tonkin: Cao Bang)
Papilio eurypylus acheron f. cheronus ; Fruhstorfer,1903 : 203-204. (Tonkin: Chiem-Hoa)
Papilio eurypylus cheronus ; Jordan,1909 : 98. (Tonkin)
Papilio eurypylus cheronus f.vern. petina ; Metaye,1957 : 84. (N / C / S)
Papilio eurypylus cheronus f.aest. cheronus ; Metaye,1957 : 84. (N / C / S)
Graphium eurypylus cheronus ; Ikeda et al.,1998 : 17, figs.5:1.♂,2.♂(Un), 9:15(♂genitalia). (Cuc Phuong)
Graphium eurypylus cheronus ; Shinkai,1999 : 62-63. (N: Tam Dao / S: Bao Lac)
Graphium eurypylus cheronus ; Luong et al.,2004 : 1, 27, figs.♂,♂(Un). (Cuc Phuong)
Graphium eurypylus ; Monastyrskii et al.,2006 : 38. (Thua Thien Hue: Nam Dong; A Luoi; Phong Dien)
Graphium eurypylus cheronus ; Monastyrskii,2007 : 82-83, pl.26, figs.1a♂,1b♂(Un). (throughout the country)
Graphium eurypylus cheronus ; Miyazaki, Saito & Saito,2007c : 37, figs.Pa-39,♂,♀. (Lam Dong: Madagui; Dong Nai: Thac Mai)
Graphium eurypylus cheronus ; Monastyrskii & Devyatkin,2015 : 14. (N / C / S)
Arisbe eurypylus acheron ; Page & Treadaway,2014 : 259, 265. (Vietnam)

[ THAILAND ]
Phetchabun : 1♂ (photo by T.Aoyama).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chaiyaphum : 2♂ (incl. photo by T.Aoyama).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nakhon Nayok : 1♂ (photo by T.Aoyama).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chanthaburi : 11♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Trat : 3♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ LAOS ]
Bolikhamxai : 12♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Khammouan : 4♂.

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

Ninh Binh : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lam Dong : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Dong Nai : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is locally common in montane forests at low to moderate elevations (Alt. 30 - 900m). Males frequently come to the banks of streams and puddles to suck water.
The records from W.Thailand such as 'Kanburi' by Fruhstorfer,1903 and 'Khlong Tariew, Kanchanaburi' by Kimura et al.,2011 are considered dubious. We have not seen any definite specimens from this area, and if this species is distributed in this area, it could be ssp.mecisteus. Further distributional research and taxonomic study are needed.
Kimura assigned 'Khlong Tariew' to Kanchanaburi, W.Thailand, however this location name is in Chanthaburi, S.E.Thailand and there is no place in Kanchanaburi with this name. After reviewing various circumstantial evidence, including other species recorded at the same locality, we consider that this is definitely Chanthaburi in S.E.Thailand, not Kanchanaburi in W.Thailand.

Moore, F.,1885 : Description of a new Specied of the Zetides Section of Papilio.
Ann. Mag. nat. Hist. 5(16):120.

Fruhstorfer, H.,1903 : Verzeichnis der in Tonkin, Annam und Siam gesammelten Papilioniden und Besprechung verwandter Formen.
Berl. ent. Z. 47(3/4):167-234.

Fruhstorfer, H.,1908 : Neue Papilio-Rassen aus der Eurypylus-Gruppe.
Ent. Zeit. 21(37):222.

Jordan, K.,1909 : Die Indo-Australische Tagfalter. Papilionidae in Seitz, Grossschmett. Erde
9:97-104.

Kocak, A.O. & Kemal, M.,2000: Sergi Asiye ve Pasipiktiki bezi taksonlar heqqide nomenklatur hatiriliri (Papilionidae, Lepidoptera).
Cent. ent. Stud. Misc. 71:1-6, 11.

Racheli, T. & Cotton, A.M.,2009 : Guide to the Butterflies of the Palearctic Region. PAPILIONIDAE part 1. subfamily Papilioninae. Tribes Leptocircini Teinopalpini.
70 pp, colour illus, maps. Omnes Artes, Milano.

Page, M.G.P. & Treadaway, C.G.,2014 : Revisional notes on the Arisbe eurypylus species group (Lepidoptera: Papilionidea: Papilionidae)
Stutt. Beit. Natur. Serie A, Neue Ser. 7:253-284.

♂, Phetchabun, Thailand. (photo by T.Aoyama)	♂, Chaiyaphum, Thailand. (photo by T.Aoyama)
♂ with sarpedon, Nakhon Nayok, Thailand. (photo by T.Aoyama)

1996.10.08 - 2023.05.31.