♂, Ranong, Thailand.		♀, Mae Hong Son, Thailand.
♂, Chiang Mai, Thailand.		♀, Tak, Thailand.
♂ genitalia, Chiang Mai, Thailand.

ON : Celaenorrhinus patula Nicéville, 1889 OD : J. Bombay nat. Hist. Soc. 4: 182-183, pl.B, fig.4,♀. TL : Sikkim. (NZC) Distribution : Sikkim to Myanmar, Thailand, Laos, Vietnam, China.

Celaenorrhinus dayaoensis Koiwaya, 1996 : Studies of Chenese Butterflies 3: 276-277, figs.1311(HT,♂), 1321(HT,♂Un), 1400(♂genitalia). TL. Dayao Shan, Guangxi.

patula  ; 1♂ 1♀ Type, Sikkim. (NZC) ; Sheela et al.,2019 : 15, figs.♂,♂(Un),♀,♀(Un).
dayaoensis  ; Holotype ♂, Apr.1992. Dayao Shan (1000-1800m), Guangxi, China. (in coll. S.Koiwaya)

[ THAILAND ]
Celaenorrhinus patula ; Pinratana,1985 : 27. not fig. (Chiang Mai)
Celaenorrhinus patula ; Ek-Amnuay,[2007] : 748, pl.343, figs.H46,♀,♀(Un). (Chiang Mai)
Celaenorrhinus patula ; Kimura et al.,2011 : 33, figs.♂,♂(Un),♀,♀(Un). (Muang Shone)
Celaenorrhinus patula ; Ek-Amnuay,2012 : 798, pl.368, figs.H44,♀,♀(Un). (Doi Phu Kha)
Celaenorrhinus patula ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai) (accessed: 2023.05.01)

[ LAOS ]
'Celaenorrhinus patula ; Masui & Uehara,1996 : 5, pl.2, figs.9,♂,9,♀. (Saravan)'
'Celaenorrhinus patula ; Osada, Uémura & Uehara,1999 : 221, pl.134, figs.♂,♀. (Thateng)'
Celaenorrhinus patula ; Nakamura & Wakahara,2012 : 57.
Celaenorrhinus patula ; Onodera,2022 : 104, pl.240, figs.♂,♂(Un). (Khammouan: Thakhek)

[ VIETNAM ]
Celaenorrhinus patula ; Devyatkin & Monastyrskii,2002 : 143. (Cuc Phuong; Huu Lien; Ba Be)
Celaenorrhinus patula ; Luong et al.,2004 : 12, 85, figs.♂,♂(Un). (Cuc Phuong)
Celaenorrhinus patula ; Monastyrskii & Devyatkin,2015 : 72. (N: Lao Cai: Van Ban / C: Kon Tum: Ngoc Linh)

[ THAILAND ]
Mae Hong Son : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 12♂ 16♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 2♂ 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Tak : 1♀.

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

Ranong : 1♂ 2♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ LAOS ]
Sekong : 1♀.

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The butterfly is locally not rare in montane forests at moderate elevations (Alt. 700 - 1400m). They often fly out from bushes along the trail and rest on the underside of leaves with their wings spread.
I suspect that the specimens from S. Laos, Saravan in Masui & Uehara (1996) and Thateng in Osada, Uémura & Uehara (1999) could be Celaenorrhinus victor based on their appearance. Examination of the male genitalia is required.

Nicéville, L. de,1889 : On new and little-known Butterflies from the Indian region, with a revision of the genus Plestoneura of Felder and of Authors.
J. Bombay nat. Hist. Soc. 4(3): 163-194, pls.A.B.

Koiwaya, S.,1996 : Ten new species and twenty-four new subspecies of butterflies from China, with Notes on the systematic positions of five taxa.
Studies of Chenese Butterflies 3: 237-277, col.pls.168-202.

Maruyama, K.,2000 : Some notes on hesperiid butterlies of South-East Asia (1).
Butterflies 27: 4-11. (in Japanese)

♂, Mae Hong Son, Thailand.	♀, Chiang Mai, Thailand.

1999.07.31 - 2023.07.31.