♂, Ranong, Thailand.		♀, Ranong, Thailand.
♂, Ranong, Thailand.		♀, Satun, Thailand.
♂, Chumphon, Thailand.		♀, Chumphon, Thailand.
♂, Trat, Thailand.		♀, Trat, Thailand.
♂, Chonburi, Thailand.		♂, Rayong, Thailand.
♂, Khanh Hoa, Vietnam. (photo by K.Saito)

ON : Euploea castelnaui Felder & Felder, [1865] OD : Reise Fregatte Novara, Lep. Rhop. (2):315-316. TL : Malacca Interior. (NHML) Distribution : Nicobars, S.Myanmar, Thailand, Cambodia, Vietnam, Langkawi, Malaysia, Aur, Singapore.

Euploea phoebus Butler, 1866 : Proc. zool. Soc. Lond. 1866(2):270. TL. Penang ; 'Java'.
Euploea drucei Moore, 1883 : Proc. zool. Soc. Lond. 1883(3):290. TL. Chentaboon [Chanthaburi], Siam. (NHML)

castelnaui ; ♀, Syntype (blue), Malacca castelnais. designated by P.Ackery,1996. (NHML, examined)
phoebus ;
♂, Syntype (blue) / Type (red), Rh6697, Moulmein. designated by P.Ackery,1996. (NHML, examined)
♀, Syntype (blue) / Type (red), Rh6698, Penang. designated by P.Ackery,1996. (NHML, examined)
drucei ;
♂, Syntype (blue) / Type (red), Rh6699, Siam. designated by P.Ackery,1996. (NHML, examined)
♀, Syntype (blue) / Type (red), Rh6788, Chentabun [Chanthaburi], Siam. designated by P.Ackery,1996. (NHML, examined)

[ THAILAND ]
Euploea corus drucei ; Fruhstorfer,1910 : 258. (Chanthaburi; Bangkok)
Euploea corus drucei ; Godfrey,1916 : 120. (Chonburi: Sriracha)
Euploea corus drucei ; Godfrey,1930 : 241. (Chanthaburi; Chonburi: Sriracha; Bangkok)
Euploea corus drucei ; Godfrey,1932a : 266. (Songkhla: Wang Sai)
Euploea phaenareta castelnaui ; Pinratana,1977 : 87, fig.D32,♂. (Chonburi: Sriracha; P)
Euploea phaenareta castelnaui ; Pinratana & Eliot,1992 : 69,74, pl.88, figs.31,♂,♀. (Chumphon; Ranong; Trang)
Euploea phaenareta drucei ; Ek-Amnuay,[2007] : 214, pl.79, figs.D31a♂,♂(Un). (Ranong; Trat)
Euploea phaenareta castelnaui ; Ek-Amnuay,[2007] : 214, pl.79, figs.D31b,♀,♀(Un). (Phang-nga)
Euploea phaenareta castelnaui ; Les Day,2011-2022 : Samui Butterflies, figs.♂,♂(Un),♀,♀(Un). (Koh Samui; Koh Phangan) (accessed: 2023.03.24)
Euploea phaenareta drucei ; Ek-Amnuay,2012 : 214, pl.79, figs.N32a♂,♂(Un). (Ranong; Trat)
Euploea phaenareta castelnaui ; Ek-Amnuay,2012 : 214, pl.79, figs.N32b♀,♀(Un). (Phang-nga)
Euploea phaenareta drucei ; Kimura et al.,2016 : 40. (by literature)
Euploea phaenareta castelnaui ; Kimura et al.,2016 : 40, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Kaper WF; Ka Chong)
Euploea camaralzeman malayica ; Küppers & Janikorn,2017 : figs.Abb.Da-125-127. (Phang Nga) (in part)
Euploea phaenareta drucei ; Küppers & Janikorn,2017 : 237-238, figs.Abb.Da-145-146. (Phang Nga)
Euploea phaenareta castelnaui ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, figs. (Chumphon) (accessed: 2023.04.27)

[ CAMBODIA ]
Euploea phaenareta castelnaui ; Chartier & Kosterin,2022 : 115. (Koh Kong; Preah Sihanouk)

[ VIETNAM ]
Euploea phaenareta drucei ; Morishita,1970 : 69, fig.26,♂. (Cholon; Lai Thieu)
Euploea phaenareta ; Vu,2003 : 56. (Phu Quoc)
Euploea phaenareta drucei ; Saito et al.,2011 : 48, fig.2A♂,2B♂(Un),2C♀,2D♀(Un). (Khanh Hoa: Ninh Ich; Thua Thien Hue: Bach Ma)
Euploea phaenareta castelnaui ; Monastyrskii,2011 : 65-66, pl.11, figs.2a♂,2b♀,2c♀(Un). (S: Binh Duong: Lai Thieu)
Euploea phaenareta castelnaui ; Monastyrskii & Devyatkin,2015 : 20. (S)

[ THAILAND ]
Bangkok : 1♂ 1♀ (NHML).

Jan

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Oct

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Dec

Chonburi : 1♂.

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Rayong : 1♂.

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Dec

Trat : 2♂ 2♀ (incl. photo).

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Chumphon : 3♂ 1♀.

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Ranong : 2♂ 2♀ (incl. photo by A.Giudici).

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Surat Thani (Koh Phangan ; Koh Tao) : 2♂ 1♀ (photo by A.Giudici and P.Kosierb).

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Satun : 1♀.

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[ VIETNAM ]
Khanh Hoa : 1♂.

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Annam : 1♂ 1♀ (without date) (NHML).

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The butterfly is locally not rare in lowland forests, especially in coastal mangrove forests. Both sexes visit flowers.
The populations in this region show a tendency towards darker colouration on the upper side and smaller apical spots on the UpF from south to north. However, individual variation appears to be more pronounced than geographical variation. This makes it difficult to clearly classify subspecies. Therefore, following Monastyrskii,2011, drucei was treated as a synonym of castelnaui.

Felder, C. & Felder, R.,1865-1875 :
Rhopalocera. In Reise der Osterreichischen Fregatte "Novara" um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen Commodore B. von Wullerstorf-Urbair. Zoologischer Theil. Zweiter Band:
Abtheilung. Wien : vi + 548 + [1] pp in 5 parts, 140 pls.

Butler, A.G.,1866 :
A Monograph of the diurnal Lepidoptera belonging to the genus Euploea, with Descriptions of many Species founded principally on the Specimens in the Collection of the British Museum.
Proc. zool. Soc. Lond. 1866(2):268-302, 15 figs, pl.29,30.

Moore, F.,1883 :
A Monograph of Limnaina and Euploeina, two Groups of Diurnal Lepidoptera belonging to the Subfamily Euploeinae;
with descriptions of new genera and species. Part II. Euploeina.
Proc. zool. Soc. Lond. 1883(3):253-324, pls.29-32.

Monastyrskii, A.L.,2011 : Butterflies of Vietnam. Vol.3. Nymphalidae: Danainae, Amathusiinae
Plan-o-rama Media Co Ltd., Hanoi, Vietnam. 151pp. + 31 col. pls.

♂, Trat, Thailand.	♀, Trat, Thailand.
♂, Surat Thani (Koh Phangan), Thailand. (photo by A.Giudici)	♀, Ranong, Thailand. (photo by A.Giudici)
♀, Trat, Thailand.

1998.11.15 - 2023.04.30.