Koruthaialos butleri  (de Nicéville,[1884])
Koruthaialos butleri ♂ Up. Koruthaialos butleri ♂ Un. Koruthaialos butleri ♀ Up. Koruthaialos butleri ♀ Un.
♂, Chiang Mai, Thailand. ♀, Chiang Mai, Thailand.
Koruthaialos butleri ♂ Up. Koruthaialos butleri ♂ Un. Koruthaialos butleri ♂ Up. Koruthaialos butleri ♂ Un.
♂, Phetchaburi, Thailand. ♂, Tak, Thailand.
Koruthaialos butleri ♂ genitalia Koruthaialos butleri ♂ genitalia
♂ genitalia, Nan, Thailand.

ON : Astictopterus butleri de Nicéville,[1884]
OD : J. asiat. Soc. Bengal, Pt.2. 52(2/4):98-99, pl.10, fig.3♂.
TL : Sikkim. (♂)
Distribution : Sikkim to Myanmar, Thailand, Laos, Vietnam.
Synonym

Arunena nigerrima Swinhoe,1919 : Ann. Mag. nat. Hist. (9)3:317. TL. Khasia Hills, Assam. (♂, NHML)

Records taken from Literature

[ THAILAND ]
Koruthaialos butleri ; Pinratana,1985 : 61. (Tak / Ranong)
Koruthaialos butleri ; Kimura,1997 ; 41, pl.3, figs.51♂,52♂(Un). (Tak: Doi Musso)
Koruthaialos butleri ; Ek-Amnuay,[2007] : 784, pl.360, fig.H148,♂,♂(Un). (Tak)
Koruthaialos butleri ; Kimura et al.,2011 : 64, fig.♂,♂(Un) (Doi Suthep / Doi Musso)
Koruthaialos butleri ; Ek-Amnuay,2012 : 838, pl.387, fig.H144,♂,♂(Un). (Tak)

[ LAOS ]
Koruthaialos butleri ; Masui & Uehara,1996 : 5, pl.2,fig.23. (Laksao)
Koruthaialos butleri ; Osada, Uémura & Uehara,1999 ; 223, pl.139, fig.♂. (Oudomxay)
Koruthaialos butleri ; Nakamura & Wakahara,2012 : 59.

[ VIETNAM ]
Koruthaialos butleri ; Devyatkin & Monastyrskii,1999 ; 168. (Cao Bang / Tam Dao / Na Hang / Vu Quang)
Koruthaialos butleri ; Monastyrskii et al.,2006 : 45. (Thua Thien Hue: Huong Thuy)
Koruthaialos butleri ; Monastyrskii & Devyatkin,2015 : 78. (N / C)

Specimens Examined

[ THAILAND ]
Mae Hong Son : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Chiang Rai : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Chiang Mai : 12♂ 2♀ (incl.photo).
JanFebMarAprMayJun JulAugSepOctNovDec

Loei : 1♂ (photo).
JanFebMarAprMayJun JulAugSepOctNovDec

Nan : 8♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Tak : 3♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Phetchaburi : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Notes
Literature

de Nicéville, C.L.A.,[1884] : Third list of Butterflies taken in Sikkim in October,1883, with Notes on Habits.
J. asiat. Soc. Bengal, Pt.2. 52(2/4):92-100. pl.10, fig.3.

Swinhoe, C.,1919 : New Lycaenids and Hesperids and Two new Species of the Noctuid Family Acontiidae.
Ann. Mag. nat. Hist. (9)3:314-319.

Koruthaialos butleri ♂ Koruthaialos butleri ♂
♂, Loei, Thailand. ♂, Chiang Mai, Thailand.
Koruthaialos butleri ♂ Koruthaialos butleri ♂
♂, Nan, Thailand. ♂, Chiang Mai, Thailand.

1999.09.04 - 2017.11.30.
A Check list of Butterflies in Indo-China, Chiefly from THAILAND, LAOS & VIETNAM. Copyright © 1996- Y.Inayoshi.