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

Specimens from transition zone
♂, Chanthaburi, Thailand.		♂, Chanthaburi, Thailand.
♂, Chanthaburi, Thailand.		♂, Chanthaburi, Thailand.
♂, Chaiyaphum, Thailand.		♂, Thua Thien Hue, Vietnam. (photo by K.Saito)
♂, Dong Nai, Vietnam. (photo by K.Saito)		♀, Khanh Hoa, Vietnam. (photo by K.Saito)

ON : Goniloba sena Moore, 1866 OD : Proc. zool. Soc. Lond. 1865(3): 778. TL : "Bengal" [Bengal, India]. (NHML) Distribution : Sri Lanka, S.India to Myanmar, S.Yunnan, Andamans, Thailand, Laos, Cambodia, Vietnam, Hainan. ● ssp.sena ● transition zone of sena and uniformis ● ssp.uniformis

♂, Type (red), H2423, "Deyra Doon" [Dehra Dun], Bengal. (NHML, examined)

[ THAILAND ]
Bibasis sena ; Godfrey,1916 : 146-147.
Bibasis sena sena ; Seitz,1927 : 1052. (Siam)
Bibasis sena sena ; Godfrey,1930 : 356. (Prae: Me Song forest; Muak Lek; Pak Jong; Chonburi: Sriracha; Bangkok)
Bibasis sena sena ; Evans,1949 : 53. (Siam)
Bibasis sena sena ; Pinratana,1985 : 17, pl.4, figs.10a♂,♂(Un). (Chaiyaphum; Nakhon Ratchasima; Chanthaburi)
Bibasis sena sena ; Ek-Amnuay,[2007] : 728, pl.333, figs.H12a♂,♂(Un). (Phu Khieo; Chanthaburi)
Bibasis sena sena ; Chiba,2009 : 14-15, pl.5, fig.7,♂. (Chantaburi)
Bibasis sena sena ; Kimura et al.,2011 : 23, figs.♂,♂(Un). (Phu Khiewo; Kao Yai; Wan Nam Khiewo; Kao Soi Dao; Ratchaburi)
Bibasis sena sena ; Ek-Amnuay,2012 : 776, pl.357, figs.H11a♂,♂(Un). (Phu Khieo; Chanthaburi)
Bibasis sena sena ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2024- : Butterflies of Thailand, fig. (Chiang Mai) (accessed: 2024.06.17)
Bibasis sena (transition zone of sena and uniformis) ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2024- : Butterflies of Thailand, figs. (Phetchabun; Nakhon Ratchasima; Sa Kaeo; Nakhon Nayok; Chanthaburi; Ratchaburi; Phetchaburi) (accessed: 2024.06.17)

[ LAOS ]
Bibasis sena sena ; Motono & Negishi,1989 : 78, not fig. (Tha Ngone)
Bibasis sena sena ; Osada, Uémura & Uehara,1999 : 221, pl.130, fig.♂(Un). (Oudomxay)
Bibasis sena sena ; Chiba,2009 : 14-15, pl.5, fig.7♂. (Laos)
Bibasis sena sena ; Nakamura & Wakahara,2012 : 56.
Bibasis sena sena ; Onodera,2022 : 101, pl.235, figs.♂,♂(Un). (Bolikhamxai: Nahin)

[ CAMBODIA ]
Bibasis sena sena ; Kosterin,2019b : 33, fig.36,[♂](Un). (Ratanakiri)
Bibasis sena sena ; Chartier & Kosterin,2022 : 124. (Ratanakiri; Siem Reap)

[ VIETNAM ]
Bibasis sena sena ; Devyatkin & Monastyrskii,2002 : 140. (C: Dak Rong ; Pu Mat)
Bibasis sena sena ; Luong et al.,2004 : 12, 83, figs.♂,♂(Un). (Cuc Phuong)
Bibasis sena sena ; Chiba,2009 : 14-15, pl.5, fig.7♂. (C)
Bibasis sena sena ; Monastyrskii & Devyatkin,2015 : 70. (C: Nghe An)

[ THAILAND ]
Chiang Mai : 2♂ 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 6♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

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Transition zone of ssp.sena and ssp.uniformis

Chaiyaphum : 1♂.

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

Sa Kaeo : 1♂ (photo by M.Hayashi).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chanthaburi : 7♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phetchaburi : 3♂ (photo by M.Hayashi & A.Giudici).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

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[ LAOS ]
Bolikhamxai : 1♂ (photo by H.Onodera).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is locally not rare in montane forests at low to moderate elevations (Alt. 150 - 1200m) and is crepuscular. Males frequently come to the banks of streams and puddles to suck water.
The area from the northern part of peninsular Thailand to central Vietnam seems to be a transition zone between ssp.sena and ssp.uniformis. Both taxa are sympatric, and intermediate individuals are often found together.

Moore, F.,1866 : On the lepidopterous insects of Bengal.
Proc. zool. Soc. Lond. 1865(3): 755-822, 3 pls.

Evans, W.H.,1949 : A catalogue of the Hesperiidae from Europe, Asia and Australia in the British Museum (Natural History).
i-xix + 1-502, pls.1-35. London.

♂, Phetchaburi, Thailand. (photo by M.Hayashi)	♂, Phetchaburi, Thailand. (photo by M.Hayashi)
♂, Phetchaburi, Thailand. (photo by M.Hayashi)	♂, Sa Kaeo, Thailand. (photo by M.Hayashi)

1999.07.31 - 2024.06.30.