♂, Chanthaburi, Thailand.		♀, Chanthaburi, Thailand.
♂, Sekong, Laos. (photo by K.Saito)		♀, Siam Reap, Cambodia. (photo by K.Saito)
♂, Chaiyaphum, Thailand.		♂, Phetchabun, Thailand.
♂ genitalia, Chanthaburi, Thailand.
♂ genitalia, Chaiyaphum, Thailand.

ON : Amathuxidia amythaon annamensis Talbot, 1932 OD : Bull. Hill Mus. 4:167. TL : Annam. Distribution : Thailand, Laos, Cambodia, C. & S.Vietnam. ● ssp.amythaon ● intermediate between amythaon and annamensis ● ssp.annamensis ● ssp.dilucida

[ THAILAND ]
Amathuxidia amythaon amythaon ; Pinratana,1983 : 53. (Chiayaphum; Nakhon Ratchasima; Nakhon Nayok; Chanthaburi) (in part)
Amathuxidia amythaon amythaon ; Ek-Amnuay,[2007] : 326. pl.137, figs.A17a♂,♀,♀(Un). ('Chiang Mai' [loc.err.])
Amathuxidia amythaon amythaon ; Ek-Amnuay,2012 : 328, pl.137, figs.N164a♂,♀,♀(Un). ('Chiang Mai' [loc.err.])
Amathuxidia amythaon annamensis ; Ek-Amnuay,2012 : 328, pl.137, figs.N164c♂. (Khao Soi Dao)
Amathuxidia amythaon annamensis ; Okamoto et al.,2013 : 9, 19, photo.23,♂. (Kanchanaburi: Mae Klong Station)
Amathuxidia amythaon annamensis ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs., Early Stages. (Phetchabun; Chaiyaphum; Sa Kaeo) (accessed: 2024.05.06)
Amathuxidia amythaon annamensis ; Kimura et al.,2016 : 146, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Khao Yai; Nakohn Nayok; Khao Soi Dao)

[ LAOS ]
Amathuxidia amythaon amythaon ; Motono & Negishi,1989 : 66, pl.93, figs.1&,#9792;,2,♀(Un). (Vang Vieng)
Amathuxidia amythaon amythaon ; Osada, Uémura & Uehara,1999 : 212, pl.100, figs.♂,♀. (Thabok)
Amathuxidia amythaon amythaon ; Uémura,2005 : 4, fig.23,map.
Amathuxidia amythaon amythaon ; Nimura & Wakahara,2005 : 44. (Thabeng)
Amathuxidia amythaon amythaon ; Nakamura & Wakahara,2012 : 49.
Amathuxidia amythaon amythaon ; Onodera,2022 : 66, pl.197, figs.♂,♂(Un). (Bolikhamxai: Phon Si)

[ CAMBODIA ]
Amathuxidia amythaon annamensis ; Monastyrskii et al.,2011 : 129. (Phnom Samkos W.S.)
Amathuxidia amythaon annamensis ; Kosterin,2020 : 329. (Siem Reap)
Amathuxidia amythaon annamensis ; Chartier & Kosterin,2022 : 116. (Pursat; Siem Reap)

[ VIETNAM ]
Amathuxidia amythaon f. amythaon ; Dubois & Vitalis,1924 : 33. (Annam: Keng-Trap)
Amathuxidia amythaon f. dilucida ; Dubois & Vitalis,1924 : 33. (Cochinchine: Tayninh)
Amathuxidia amythaon amythaon ; Metaye,1957 : 100. (C)
Amathuxidia amythaon dilucida ; Metaye,1957 : 100. (S)
Amathuxidia amythaon annamensis ; Miyazaki, Saito & Saito,2006c : 34, figs.S-45,♂,♀. (Lam Dong: Dambri; Dai Duc Me; Dong Nai: Thac Mai; Bin Thuan: Dong Tien)
Amathuxidia amythaon annamensis ; Monastyrskii,2011 : 107-108, pl.25, figs.a♂,b♂(Un),c♀. (C: Pu Mat; Huong Son; Phong Dien; Son Thanh; Chu Yang Sin; Cat Loc; Da Teh / S: Nam Cat Tien; Tan Phu)
Amathuxidia amythaon annamensis ; Monastyrskii & Devyatkin,2015 : 29. (C / S)

[ THAILAND ]
Phetchabun : 2♂ 1♀ (incl. photo by A.Giudici).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chaiyaphum : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sa Kaeo : 2♂ (photo and photo by S.Sophonviwatkul).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nakhon Nayok : 3♂ 1♀ (photo by M.Hayashi & T.Aoyama).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chanthaburi : 3♂ 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ LAOS ]
Sekong : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ CAMBODIA ]
Siam Reap : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is not rare in montane dense forests mixed with bamboo at moderate elevations (Alt. 300 - 1100m) and often comes to rotten fruits that has fallen to the ground. They prefer in the dark jungle and suddenly fly out from below. Flight is fast and quickly fly away into the bush.
Examples from Central Thailand (Phetchabun and Chaiyaphum) are very interesting, both the shape of the wings and blue band on the UpF seem to be intermediate between the nominotypical subspecies and ssp.annamensis. And the hairtuft at the base of space 1a is small and inconspicuous as in ssp.annamensis. Okamoto et. al.,2013 also noted that two subspecies are found sympatric in Western Thailand.
The genitalia of ssp.amythaon, ssp.dilucida, ssp.annamensis and these populations are similar and could not find obvious difference between them. However further taxonomic study is needed.

Talbot, G.,1932 : New forms of lepidoptera from the oriental region.
Bull. Hill. Mus. 4:155-169.

♂, Nakhon Nayok, Thailand. (photo by T.Aoyama)	♀, Nakhon Nayok, Thailand. (photo by M.Hayashi)
♂, Sa Kaeo, Thailand.	♂, Nakhon Nayok, Thailand. (photo by M.Hayashi)
♂, Phetchabun, Thailand. (photo by A.Giudici)	♀, Phetchabun, Thailand. (photo by A.Giudici)
♂, Nakhon Nayok, Thailand. (photo by M.Hayashi)	♂, Phetchabun, Thailand.

2007.10.10 - 2024.05.31.