♂, 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 ; Sophonviwatkul et al.,2024– : Butterflies of Thailand, fig. (Chiang Mai) (accessed: 2024.06.17)
Bibasis sena (transition zone of sena and uniformis) ; Sophonviwatkul et al.,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 et al.,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 uncommon in forests at low to moderate elevations (Alt. 150 - 1200m) and is crepuscular. Males are frequently observed mud-puddling along stream banks and at puddles.
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.