♂, Trat, Thailand.		♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.		♂, Nan, Thailand.
♂, Phetchaburi, Thailand.		♂, Chanthaburi, Thailand.

ON : Hypolycaena amasa Hewitson, 1865 OD : Ill. diurn. Lep. Lycaenidae 1(2):51, pl.22, figs.19, 20. TL : India. Distribution : S.India to Myanmar, Thailand, Laos, Cambodia, Vietnam, Hainan, S.China. ● ssp.amasa ● ssp.maximinianus

Papilio etolus Fabricius, 1787 : Mantissa Ins. 2:66. TL. "Indiis". (Homonym)

[ THAILAND ]
Zeltus etolus ; Godfrey,1916 : 141. (Prae: Me Song forest; Chonburi: Dong Rek hills)
Zeltus etolus etolus ; Godfrey,1927 : 126. (N)
Zeltus etolus etolus ; Godfrey,1930 : 348. (Prae; Muak Lek; Chonburi: Sriracha; W: Klong Pong Kapo)
Zeltus amasa amasa ; Shirôzu & Saigusa,1962 : 56, pl.8, figs.55,♂,56,♂(Un). (Mae Hoi)
Zeltus amasa amasa ; Kawazoé,1964 : 144-145, pl.7, figs.49,♂,50,♂(Un),Textfig.15,♂genitalia. (N: Ping Kong)
Zeltus amasa amasa ; Pinratana,1981 : 141, pl.24, fig.13,♀ ; pl.25, figs.1,♂,2,♀,3,♂(Un). (Chiang Mai; Chanthaburi; Chonburi; Nakhon Nayok)
Zeltus amasa amasa ; Yamaguchi & Aoki,2000 : 259, fig.162,♂. (Mukdahan: Phu Pha Thaep)
Zeltus amasa amasa ; Yamaguchi & Aoki,2002 : 40. (Mukdahan: Ban Na Lak; Ubon Ratchathani: Phu Chong Na Yoi; Kaeng E-Keow)
Zeltus amasa amasa ; Katsuyama et al.,2005 : 67, fig.96,♂. (Umphang: Tha Sai)
Zeltus amasa amasa ; Katsuyama et al.,2006 : 48, fig.72,♂. (Nan: Ban Nam Poon)
Zeltus amasa amasa ; Ek-Amnuay,[2007] : 702, pl.321, figs.L391a♂,♂(Un). (Chiang Mai; Phrae)
Hypolycaena amasa amasa ; Ek-Amnuay,2012 : 746, pl.341, figs.L410a♂,♂(Un). (Chiang Mai; Phrae)
Hypolycaena amasa amasa ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Hypolycaena amasa amasa ; Kimura et al.,2014 : 129, figs.♂,♂(Un),♀,♀(Un). (Doi Suthep; Phu Khiewo; Kao Yai; Nakohn Nayok; Wan Nam Khiewo; Kao Soi Dao; Kratching WF; Pliew WF; Kao Khiewo; Doi Musso; Khlong Tariew)
Hypolycaena amasa amasa ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Phetchabun; Sa Kaeo; Trat) (accessed: 2024.06.09)

[ LAOS ]
Zeltus amasa amasa ; Motono & Negishi,1989 : 76, col.pl.15,♂ ; pl.108, figs.A5,♂,A6,♂(Un),A7,♀,A8,♀(Un). (Luang Prabang; Pakse; Vang Vieng)
Zeltus amasa amasa ; Osada, Uémura & Uehara,1999 : 219. pl.126, figs.♂,♂(Un). (Thateng)
Zeltus amasa amasa ; Nimura & Wakahara,2005 : 48. (Thabok; Namdhua)
Hypolycaena amasa amasa ; Onodera,2009b : 40,41. (Bolikhamxai: Thabok; Khammouan: Nacay)
Hypolycaena amasa amasa ; Nakamura & Wakahara,2012 : 55.
Hypolycaena amasa amasa ; Onodera,2022 : 96, pl.229, figs.♂,♂(Un),♀,♀(Un). (Khammouan: Nakai; Xiengkhouang: Phon Kham)

[ CAMBODIA ]
Zeltus amasa amasa ; Woodfield & Murton,2006 : figs.♀,♀(Un). (Botum Sakor NP.)
Hypolycaena amasa ; Onodera,2008 : 58,61. (Mondolkiri: Bousra)
Hypolycaena amasa ; Onodera,2009 : 40, figs.♂,♂(Un). (Siem Reap: Phnum Kulen)
Hypolycaena amasa amasa ; Monastyrskii et al.,2011 : 130. (Phnom Samkos W.S.)
Hypolycaena amasa amasa ; Kosterin,2019 : 92. (Koh Kong; Preah Sihanouk)
Hypolycaena amasa amasa ; Kosterin,2019b : 29. (Ratanakiri)
Hypolycaena amasa amasa ; Kosterin,2020 : 320. (Siem Reap; Preah Vihear)
Hypolycaena amasa amasa ; Chartier & Kosterin,2022 : 123. (Koh Kong; Kampot; Mondulkiri; Preah Sihanouk; Pursat; Ratanakiri; Siem Reap; Stueng Treng)

[ VIETNAM ]
Zeltus etolus ; Moulton,1923 : 131. (Pulo Condore)
Zeltus etolus ; Lemée,1950 : 20-21. (Hagiang; Backan)
Zeltus etolus etolus ; Metaye,1958b : 175. (N: Hagiang; Backan / S: Ben Nom; Foret de Dinh Quan; Col du Da Troun)
Zeltus amasa amasa ; Ikeda et al.,2001 : 51, figs.5:6,♀,7,♀(Un). (Cuc Phuong)
Zeltus amasa ; Vu,2003 : 58. (Phu Quoc)
Hypolycaena amasa amasa ; Luong et al.,2004 : 12, 81, figs.♂,♂(Un). (Cuc Phuong)
Hypolycaena amasa ; Monastyrskii et al.,2006 : 44. (Thua Thien Hue: Nam Dong; A Luoi; Phong Dien; Bach Ma)
Hypolycaena amasa amasa ; Miyazaki, Saito & Saito,2006d : 68, figs.L-134,♂,♀. (Lam Dong: Dambri)
Hypolycaena amasa amasa ; Nihira,2009 : 100, fig.f1,♂. (Phu Quoc)
Hypolycaena amasa amasa ; Saito et al.,2017 : 79. (S: Nui Cam; Nui Coto)
Hypolycaena amasa amasa ; Monastyrskii & Devyatkin,2015 : 68. (N / C / S)

[ THAILAND ]
Mae Hong Son : 8♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 10♂ 2♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 2♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Tak : 3♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chanthaburi : 5♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Trat : 2♂.

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

[ LAOS ]
Xieng Khouang : 1♂ 1♀ (photo by H.Onodera).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Oudomxai : 1♂ (photo by H.Onodera).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is very common in montane and secondary forests at low to moderate elevations (Alt. 10 - 1300m). Males frequently come to the banks of streams and puddles to suck water.

Fabricius, J.C.,1787 : Mantissa Insectorum sistens eorum species nuper detectas adiectis characteribus genericis,
differentiis specificis, emendationibus, observationibus.
Copenhagen, Christ. Gottl. Proft 8vo 1:xx+348pp ; 2:[2]+382pp

Hewitson, W.C.,1863-1878; Illustrations of diurnal Lepidoptera. Part I. Lycaenidae.
London, John Van Voorst.
(1):1-37 [sic], pls.1-16. (6.Jul.1863) ; (2):37-76, pls.17-30. (24.Jun.1865) ; (3):77-114, pls.31-46. (1.Apr.1867) ; (4):115-136, 14a-14h, supplementary pp.1-16, pls.47-54, 3a-3c, supplementary pls.1-5. (30.Apr.1869) ; (5):137-151 [sic], pls.55-59, supplementary pl.6. (10.Feb.1873) ; (6):151-185 [sic], pls.60-73. (1.Dec.1874) ; (7):185-209 [sic], pls.74-83 (Jan.1877) ; (8):209-228, supplementary pp. 17-35 [sic], 35-47, pls.84-85, 88-92, supplementary pls.1a-1b, 3a-3b, 4a, 5a-5b, 7-8. (Nov.1878) [pls. 86-87 were never published]

Seki, Y., Takanami, Y. & Otsuka, K.,1991 : Butterflies of Borneo. Vol.2, No.1. Lycaenidae.
Tobishima Corporation.

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♂ with Megisba malaya, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.

1999.07.21 - 2024.06.30.