♂, 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 : 'Burmah [Myanmar]; Malacca, [W.Malaysia]; Java' [Taungoo, Bago Region, Myanmar]. (NHML) Distribution : Myanmar, Thailand, Laos, Cambodia, Vietnam, China. ● ssp.hector ● ssp.rubecula

Koruthaialos avidha Fruhstorfer, 1910 : Deut. ent. Zeit. [Iris] 24(5):92. TL. Süd-Annam. (NHML)
Koruthaialos xanites gopaka Fruhstorfer, 1910 : Deut. ent. Zeit. [Iris] 24(5):91. TL. 'Chiem-Hoa, Tonkin [Chiem Hoa, N.Vietnam]; Annam [C.Vietnam]' [Chiem Hoa, Tuyen Quang, N.Vietnam]. [(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(5):75-104. (1.May.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.	♀, Chiang Mai, Thailand.
♂, Nan, Thailand.
♂, Chiang Mai, Thailand.	♂ (form avidha), Chanthaburi, Thailand.

1999.09.04 - 2025.01.31.