♂, Mae Hong Son, Thailand.		♀, Chiang Mai, Thailand.
♂, Tak, Thailand.		♀, Phetchaburi, Thailand.
♂, Nan, Thailand.		♂, Phrae, Thailand.
♂ genigalia, Mae Hong Son, Thailand.

form avidha
♂, Chanthaburi, Thailand.		♂, Chanthaburi, Thailand.

ON : Koruthaialos hector Watson, 1893 OD : Proc. zool. Soc. Lond. 1893(1):77. TL : Toungoo, Burma. (♂, NHML) Distribution : Myanmar, Thailand, Laos, Cambodia, Vietnam, China. ● ssp.hector ● ssp.rubecula

Koruthaialos avidha Fruhstorfer, 1910 : Deut. ent. Zeit. [Iris] 24:92. TL. S.Annam. (♂, NHML)
Koruthaialos xanites gopaka Fruhstorfer, 1910 : Deut. ent. Zeit. [Iris] 24:91. TL. Chiem Hoa, Tonkin. (♂, NHML)

[ THAILAND ]
Koruthaialos rubeculus ; Godfrey,1927 : 127. (N)
Koruthaialos rubecula ; Godfrey,1930 : 370. (Prae: Me Song forest)
'Koruthaialos butleri butleri ; Godfrey,1930 : 370-371. (Pak Jong)'
Koruthaialos rubecula hector ; Evans,1949 : 274. (Siam)
Koruthaialos rubecula cachara ; Kimura,1997 : 39, figs.15,♂,16,♂(Un),17,♀,18,♀(Un). (Continental Thailand)
Koruthaialos rubecula hector ; Katsuyama et al.,2005 : 63, fig.17,♂. (Umphang)
Koruthaialos rubecula hector ; Ek-Amnuay,[2007] : 784, pl.359, figs.H146a♂,♂(Un). (Chiang Mai)
Koruthaialos rubecula hector ; Kimura et al.,2011 : 63, figs.♂,♂(Un),♀,♀(Un). (Chiang Dao; Doi Suthep; Ban Salok; Mae Sam; Phu Khiewo; Doi Musso)
Koruthaialos rubecula avidha ; Kimura et al.,2011 : 63, figs.♂,♂(Un),♀,♀(Un). (Nakohn Nayok; Kao Soi Dao; Pliewn WF; Kao Saverb)
Koruthaialos rubecula rubecula ; Ek-Amnuay,2012 : 836, pl.386, figs.H142c(Koruthaialos rubecula cachara),♂,♂(Un). (Trat) (in part)
Koruthaialos rubecula rubecula ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Koruthaialos rubecula hector ; Okamoto et al.,2013 : 6, fig.11,♂. (Kanchanaburi: Mae Klong Station)
Koruthaialos rubecula avidha ; Okamoto et al.,2013 : 6, fig.12,♂. (Kanchanaburi: Mae Klong Station)

[ LAOS ]
Koruthaialos rubecula hector ; Motono & Negishi,1989 : 81, pl.114, figs.A9,♂,A10,♂(Un),A11,♀,12,♀(Un). (Luang Prabang)
Koruthaialos rubecula hector ; Osada, Uémura & Uehara,1999 : 223, pl.139, fig.♂. (Lak Sao)
Koruthaialos rubecula hector ; Nimura & Wakahara,2005 : 49. (Namdhua)
Koruthaialos rubecula hector ; Nakamura & Wakahara,2012 : 59.
Koruthaialos rubecula hector ; Onodera,2022 : 114, pl.251, figs.♂,♂(Un). (Bolikhamxai: Thabok)

[ CAMBODIA ]
Koruthaialos rubecula ; Onodera,2007 : 25, fig.112,♂. (Rattanakiri: Ou Chum)
Koruthaialos rubecula hector ; Chartier & Kosterin,2022 : 125. (Preah Vihear; Ratanakiri)

[ VIETNAM ]
Koruthaialos xanites gopaka ; Seitz,1927 : 1072. (Tonkin / Annam)
Koruthaialos avidha ; Seitz,1927 : 1072. (S.Annam)
Koruthaialos xanites gopaka ; Metaye,1957 : 79. (N / C)
Koruthaialos avidha ; Metaye,1957 : 79. (C)
Koruthaialos butleri ; Inoué & Kawazoé,1966 ; 96, figs.91,♀,92,♀(Un). (Banmethuot)
Koruthaialos rubecula hector ; Devyatkin & Monastyrskii,1999 : 167. (Cao Bang; Tam Dao; Ba Be; Cuc Phuong; Vu Quang; Ba Na; Pu Mat; Gialai-Kontum)
Koruthaialos rubecula ; Devyatkin,2000 : 201. (S: Lam Dong)
Koruthaialos rubecula hector ; Ikeda et al.,2001b : 63, figs.3:7,♂,8,♂,5:24(♂genitalia). (Cuc Phuong)
Koruthaialos rubecula hector ; Luong et al.,2004 : 14, 88, figs.♂,♂(Un). (Cuc Phuong)
Koruthaialos rubecula ; Monastyrskii et al.,2006 : 45. (Thua Thien Hue: Bach Ma)
Koruthaialos rubecula hector ; Miyazaki, Saito & Saito,2007b : 10, figs.H-64,♂,♀. (Lam Dong: Dambri; Dai Duc Me)
Koruthaialos rubecula hector ; Monastyrskii & Devyatkin,2015 : 78. (N / C / S)

[ THAILAND ]
Mae Hong Son : 7♂ 2♀ (incl. photo).

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Chiang Mai : 8♂ 2♀ (incl. photo).

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Phrae : 5♂.

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Nan : 3♂ (incl. photo).

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Tak : 1♂.

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Chonburi : 1♂ (form avidha).

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Chanthaburi : 5♂ (form avidha).

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Phetchaburi : 1♀.

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

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The butterfly is locally common in secondary and montane forests at low to moderate elevations (Alt. 50 - 1300m) and is often found at forest edges. Both sexes visit flowers.
The record of Koruthaialos butleri butleri in Pak Jong by Godfrey,1930 should be Koruthaialos rubecula form avidha.

Watson, E.Y.,1893 : A proposed classification of the Hesperidae, with a revision of the genera.
Proc. zool. Soc. Lond. 1893(1):3-132, pls.1-3.

Fruhstorfer, H.,1910 : Neue Hesperiden des Indo-Malayischen Faunengebietes und Besprechung verwandter Formen.
Deut. ent. Zeit. [Iris] 24(3-5):58-104.

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♂, Nan, Thailand.
♂, Chiang Mai, Thailand.	♂ (form avidha), Chanthaburi, Thailand.

1999.09.04 - 2023.08.31.