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

ON : Hesperia leucocera Kollar, 1844 OD : In: Hügel, Kaschmir. 4(2)[1]: 454, pl.18, figs.3, 4. TL : "Himaleya". Distribution : S.India, N.W.Himalaya to Myanmar, Yunnan, Andamans, Thailand, Laos, Vietnam, Hainan, Langkawi.

Tagiades arminia Plötz, 1884 : Jb. nass. Ver. Nat. 37: 51. (Published in Synonymy)
Celaenorrhinus maculicornis vitruvius Fruhstorfer, 1910 : Deut. ent. Zeit. [Iris] 24(4): 61. TL. "Siam" [Thailand]. (NHML)

[ THAILAND ]
Celaenorrhinus leucocera ; Godfrey,1916 : 142. (Prae: Me Son forest)
Celaenorrhinus maculicornis vitruvius ; Seitz,1927 : 1036. (Siam)
Celaenorrhinus leucocera leucocera ; Godfrey,1927 : 127. (N)
Celaenorrhinus leucocera leucocera ; Godfrey,1930 : 358. (Prae: Me Song forest; Chiang Rai; Me Lamoung)
Celaenorrhinus leucocera ; Evans,1949 : 98. (Siam)
Celaenorrhinus leucocera ; Pinratana,1985 : 27, pl.10, figs.33,♂,♂(Un). (Chaiyaphum; Nakhon Ratchasima; Chanthaburi; Surat Thani)
Celaenorrhinus munda maculicornis ; Pinratana,1985 : 28, 120, pl.11, figs.37,♂,♂(Un). (Chanthaburi; Ranong)
Celaenorrhinus leucocera ; Yamaguchi & Aoki,2002 : 9, fig.,♂. (Ubon Ratchathani: Phu Chong Na Yoi; Phu Hin Dang)
Celaenorrhinus sumitra ; Ek-Amnuay,[2007] : pl.344, fig.H45,♂[♀],♂[♀](Un). (Chiang Mai)
Celaenorrhinus munda maculicornis ; Ek-Amnuay,[2007] : pl.345, H49,♂(Un). (Phu Khieo)
Celaenorrhinus leucocera ; Kimura et al.,2011 : 34, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un). (Chiang Dao; Doi Pui; Doi Suthep; Phu Khiewo; Wan Nam Khiewo; Kao Yai; Kao Soi Dao; Kraching WF; Muang Shone)
Celaenorrhinus leucocera ; Ek-Amnuay,2012 : 798, pl.368, figs.H45,♂,♂(Un),♀ (Chanthaburi).
Calaenorrhinus [sic] munda maculicornis ; Ek-Amnuay,2012 : pl.369, figs.H47,♂[♀],♀[♂](Un). (in part) (Phu Khieo)
Celaenorrhinus leucocera ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs., Early Stages. (Chiang Mai) (accessed: 2023.05.01)
Celaenorrhinus leucocera ; Küppers & Janikorn,2017 : 73-74, fig.Abb.H-062. (Phang Nga)

[ LAOS ]
Celaenorrhinus leucocera ssp. ; Motono & Negishi,1989 : 79, pl.110, figs.B5,♀,B6,♀(Un). (Pakse; Nam Moh; Vang Vieng)
Celaenorrhinus leucocera ; Osada, Uémura & Uehara,1999 : 221, pl.134, figs.♂,♀. (Saravan; Oudomxay)
Celaenorrhinus leucocera ; Nakamura & Wakahara,2012 : 57.
Celaenorrhinus leucocera ; Onodera,2022 : 104, pl.239, figs.♂,♂(Un),♀,♀(Un). (Luang Phabang; Bolikhamxai: Thabok)

[ VIETNAM ]
Celaenorrhinus leucocera leucocera ; Seitz,1927 : 1036. (Tonkin / Annam)
Celaenorrhinus leucocera ; Evans,1949 : 98. (Tonkin)
Celaenorrhinus leucocera ; Lemée,1950 : 22. (Hagiang)
Celaenorrhinus leucocera leucocera ; Metaye,1957 : 77. (N / C)
Celaenorrhinus leucocera ; Devyatkin & Monastyrskii,1999 : 158. (N: Tam Dao)
Celaenorrhinus leucocera ; Devyatkin & Monastyrskii,2003 : 122. (S: Cat Tien)
Celaenorrhinus leucocera ; Luong et al.,2004 : 12. (Cuc Phuong)
Celaenorrhinus leucocera ; Miyazaki, Saito & Saito,2007b : 3, fig.H-16,♀. (Lam Dong: Dambri; Dai Duc Me)
Celaenorrhinus leucocera ; Miyazaki et al.,2010 : 19, fig.H-16,♂. (Lam Dong: Dai Duc Me)
Celaenorrhinus leococera ; Monastyrskii & Devyatkin,2015 : 72. (N / C : to Lam Dong)

[ THAILAND ]
Mae Hong Son : 2♂ 3♀.

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Chiang Mai : 3♂ 7♀ (incl. photo).

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Phrae : 1♂ 1♀.

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Nan : 1♂.

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Phetchaburi : 1♂ (photo by M.Hayashi).

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

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Khammouan : 1♀.

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The butterfly is locally common in montane forests at low to moderate elevations (Alt. 200 - 1200m). They often fly out from bushes along the trail and rest on the underside of leaves with their wings spread.

Kollar, V.,1844 : In: Kollar, V. & L. Redtenbacher, Aufzählung und Beschreibung der von Freiherrn Carl v. Hügel auf seiner Reise durch Kaschmir und das Himaleyagebirge gesammelten Insecten.
In: Hügel, Kaschmir und das Reich der Siek.
Stuttgart, Hallbergerische Verlagshandlung 4(2)[1]: [393]-564, [582]-[586], 28 pls.

Plötz, C.,1884 : Die Hesperiinen-Gruppe der Achlyoden.
Jb. nass. Ver. Nat. 37: 1-55.

Fruhstorfer, H.,1910 : Neue Hesperiden des Indo-Malayischen Faunengebietes und Besprechung verwandter Formen.
Deut. ent. Zeit. [Iris] 24(4): 59-74. (1.Apr.1910)

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.

♀, Chiang Mai, Thailand.

1999.07.31 - 2023.05.31.