♂, Chiang Mai, Thailand.		♂, Chiang Mai, Thailand.
♂, Nan, Thailand.		♂, Tak, Thailand.

ON : Ismene benjaminii var.japonica Murray, 1875 OD : Ent. mon. Mag. 12:4. TL : Japan. (♂, NHML) Distribution : W.Himalayas, Nepal, Sikkim, Assam, Myanmar, Thailand, Laos, Vietnam, China, Taiwan, Japan. [Palawan]

Rhopalocampta benjaminii formosana Fruhstorfer, 1911 : Deut. ent. Zeit. [Iris] 25:78. TL. Chip-Chip, Formosa. (NHML)

[ THAILAND ]
Choaspes benjaminii formosanus ; Evans,1949 : 75. (Siam)
Choaspes benjaminii formosanus ; Pinratana,1985 : 23, pl.7, figs.25,♂,♂(Un). (Chiang Mai; 'Nakhon Ratchasima')
Choaspes benjaminii formosanus ; Tsukiyama,1992 ; 26, pl.1, figs.1-1b♀, 1-3b♂. (Chiang Mai: Fang)
Choaspes plateni caudatus ; Ek-Amnuay,[2007] : pl.338, [figs.29a♀[♂],♀[♂](Un). (in part)
Choaspes benjaminii formosanus ; Ek-Amnuay,[2007] : 740, pl.339, figs.H31,♂,♂,♂(Un),♂,♂(Un),♀[♂],♀[♂](Un),♀[♂](Un). (Chiang Mai; Mae Tha)
Choaspes xanthopogon ; Ek-Amnuay,[2007] : pl.340, [figs.H33,♂,♂(Un),♂(Un). (in part)
Choaspes benjaminii japonicus ; Chiba,2009 : 39-40, pl.17, figs.8♂,9♀. (Chiang Dao; Fang; Melanoung)
Choaspes benjaminii formosanus ; Kimura et al.,2011 : 29, figs.♂,♂(Un). (Doi Pha Hom Pok)
Choaspes benjaminii formosanus ; Ek-Amnuay,2012 : 788, pl.363, figs.H30,♂,♂,♂(Un),♂,♂(Un).♂,♂(Un),♂(Un). (Chiang Mai; Mae Tha)
Choaspes benjaminii japonica ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai) (accessed: 2023.03.26)

[ LAOS ]
Choaspes benjaminii formosana ; Masui & Uehara,1994 : 7, fig.48,♂,♂(Un). (Xiang Khouang)
Choaspes benjaminii formosanus ; Osada, Uémura & Uehara,1999 : 221, pl.132, figs.♂,♀. (Oudomxay; Xam Neua)
Choaspes benjaminii formosanus ; Onodera,2009b : 35-36. (Xieng Kouang: Muang Kham)
Choaspes benjaminii formosanus ; Nakamura & Wakahara,2012 : 57.
Choaspes benjaminii japonicus ; Onodera,2022 : 103, pl.238, figs.♂,♂(Un),♀,♀(Un). (Luang Phabang: Chamlong; Houaphan: Phou Pan)

[ VIETNAM ]
Rhopalocampta benjamini benjamini [sic] ; Seitz,1927 : 1055. (Tonkin)
Choaspes benjaminii formosanus ; Evans,1949 : 75. (Tonkin)
Rhopalocampta benjamini [sic] ; Lemée,1950 : 24. (Backan)
Rhopalocampta benjamini benjamini [sic] ; Metaye,1957 : 78. (N)
Choaspes benjaminii formosana ; Devyatkin & Monastyrskii,1999 : 156. (N: Tam Dao; Ba Be / C: Vu Quang)
Choaspes benjaminii formosanus ; Luong et al.,2004 : 12, 84, figs.♂,♂(Un). (Cuc Phuong)
Choaspes benjamini [sic] ; Monastyrskii et al.,2006 : 44. (Thua Thien Hue: Nam Dong)
Choaspes benjaminii formosanus ; Miyazaki, Saito & Saito,2007b : 3, fig.H-11,♂,♀. (Lam Dong: Dambri)
Choaspes benjaminii japonicus ; Chiba,2009 : 39-40, pl.17, figs.8♂,9♀. (Tuyen Quang [Cochin] / 'Tonkin')
Choaspes benjaminii formosanus ; Monastyrskii & Devyatkin,2015 : 71. (N / C)

[ THAILAND ]
Mae Hong Son : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 12♂ 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 5♂ 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

[ LAOS ]
Houaphan : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phongsali : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sekong : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ VIETNAM ]
Lao Cai : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lam Dong : 5♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is locally not rare in montane forests at low to high elevations (Alt. 300 - 1800m). Males frequently come to the banks of streams and puddles to suck water.
Pinratana, 1985 recorded this taxon from Nakhon Ratchasima, but this needs to be confirmed by examination of the genitalia This species can be distinguished from allied species, particularly xanthopogon and furcatus, by examination of the male genitalia.

Murray, R.R.P.,1875 : Notes on Japanese Rhopalocera, with Description of a new species.
Ent. mon. Mag. 12:2-4.

Fruhstorfer, H.,1911 : Neue Hesperiden des Indo-Malayischen Faunengebietes und Besprechung verwandter Formen.
Deut. ent. Zeit. [Iris] 25(2-6):9-79, pl.1.

Tsukiyama, H.,1992 : Genus Choaspes Moore, a review (Lepidoptera: Hesperiidae) - with illustration of all taxa and new information up to 1991 -
Butterflies 2:26-42.

Chiba, H.,2009 : A revision of the subfamily Coeliadinae (Lepidoptera: Hesperiidae).
Bull. Kitakyushu Mus. Nat. Hist. Hum. Hist. Ser.A, 7:1-102.

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

1999.07.31 - 2023.04.30.