♂, Chiang Mai, Thailand.		♀, Tak, Thailand.
♂, Nan, Thailand.		♀, Nan, Thailand.

ON : Camena ctesia Hewitson, 1865 OD : Ill. diurn. Lep. Lycaenidae 1(2):48, pl.20, figs.1,♂, 2,♂(Un). TL : Northern India. Distribution : Nepal, N.India, Myanmar, Thailand, Laos, Vietnam, W.Malaysia.

[ THAILAND ]
Camena ctesia agalla ; Davidson & Macbeth,1938 : 83. (Chiang Mai: Doi Suthep)
Ancema ctesia agalla ; Pinratana,1981 : 138, pl.24, figs.8,♂,9,♂(Un). (Chiang Mai; Tak)
Ancema ctesia agalla ; Ek-Amnuay,[2007] : 698, pl.319, figs.L382a♂,♂(Un),♀,♀(Un). (Phrae; Chiang Mai; Doi Pha Hom Pok)
Ancema ctesia ctesia ; Ek-Amnuay,[2007] : 698, pl.319, figs.L382b♂,♂(Un),♀,♀(Un). ('Yala')
Ancema ctesia ctesia ; Ek-Amnuay,2012 : 742, pl.340, figs.L404,♂,♂(Un),♂,♂,♀,♀,♀,♀(Un). (Phrae; Chiang Mai; Doi Pha Hom Pok; 'Yala')
Ancema ctesia ctesia ; Kimura et al.,2014 : 126, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Fang; Doi Chiang Dao; Doi Suthep; Doi Inthanon; Phu Khiewo)
Ancema ctesia ctesia ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Lampang; Kamphaeng Phet; Phetchabun) (accessed: 2023.08.20)

[ LAOS ]
Ancema ctesia agalla ; Motono & Negshi,1989 : 76, pl.107, figs.B11.♂,B12.♂(Un). (Phatong)
Ancema ctesia agalla ; Osada, Uémura & Uehara,1999 : 219. pl.126, figs.♂,♂(Un). (Oudomxay; Xam Neua)
Ancema ctesia ctesia ; Nakamura & Wakahara,2012 : 55, pl.23, figs.Ly-250,♀,♀(Un). (Phou Pan)
Ancema ctesia ctesia ; Onodera,2022 : 95, pl.229, figs.♂,♂(Un). (Bolikhamxai: Lak Sao)

[ VIETNAM ]
Ancema ctesia ctesia ; Monastyrskii & Devyatkin,2015 : 68. (N: Lao Cai / C: Nghe An)

[ THAILAND ]
Mae Hong Son : 2♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 15♂ 2♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lampang : 4♂ (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

Tak : 1♂ 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is not rare in montane forests at moderate elevations (Alt. 300 - 1500m). Males frequently come to the banks of streams and puddles to suck water.
Ek-Amnuay ([2007],2012) recorded this from 'Yala', however it is quite doubtful. I have never seen any specimens from Peninsular Thailand until now. Further distributional research is needed.

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]

♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.

1999.07.21 - 2023.08.31.