♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, 1984.04.28. Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.

ON : Heliophorus viridipunctata eventa Fruhstorfer, 1918 OD : Tjidschr. Ent. 61:52, pl.6. TL : Ta tsien Lu, Szetchuan. Distribution : N.Myanmar, N.Thailand, Laos, Vietnam, Yunnan, Sichuan, Gansu.

[ THAILAND ]
Heliophorus eventa ; Yago,2002 : 157-158. (Thailand)
Heliophorus eventa ; Schröder,2006 : 98, figs.7,♂,8,♂(Un). (Doi Pha Hom Pok)
Heliophorus evanta [sic] ; Ek-Amnuay,[2007] : 592, pl.267, figs.L164,♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok)
Heliophorus evanta [sic] ; Ek-Amnuay,2012 : 616, pl.279, figs.L188,♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok)
Heliophorus eventa ; Kimura et al.,2014 : 150, figs.♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok)
Heliophorus evanta ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, figs. (Chiang Mai) (accessed: 2023.05.20)

[ LAOS ]
Heliophorus eventa ; Nakamura et al.,2010 : 26, figs.15a♂,♂(Un),15b♀,♀(Un). (Phou Samsoum)
Heliophorus eventa ; Nakamura & Wakahara,2012 : 52, pl.15, figs.Ly-98,♂,♂(Un),♀,♀(Un). (Phou Samsoum)
Heliophorus eventa ; Onodera,2022 : 84, pl.214, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un). (Xiengkhouang: Phou Samsoum)

[ VIETNAM ]
Heliophorus eventa ; Yago et al.,2005 : 366, 369, fig.8(♂,♀,♂Un.). (near Sapa; Dong Van)
Heliophorus eventa ; Monastyrskii & Devyatkin,2015 : 55. (N: Lao Cai; Ha Giang)

[ THAILAND ]
Chiang Mai : 6♂ 3♀.
Doi Pha Hom Pok, Fang dist., 1984.04.30. 1♀ P.Sukkit (YI)

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[ LAOS ]
Xiang Khouang : 1♂ (photo by K.Saito).

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[ VIETNAM ]
Ha Giang : 1♂ (photo by K.Saito).

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Lam Dong : 1♂ (photo by K.Saito).

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The butterfly is locally not rare in montane grasslands at high elevations (Alt. 1900 - 2200m). The underside is very similar to Heliophorus brahma and impossible to distinguish.
The figured male specimen is the first finding in Thailand. It was found on the top of Doi Pha Hom Pok in Fang dist., Chiang Mai province on 28.Apr.1984 by Prasobsuk Sukkit.
I tentatively treat all populations in Indo-China region as eventa. Further taxonomic study is needed.

Fruhstorfer, H.,1918 : Revision der Lycaenidengruppe Heliophorus auf Grund der Morphologie der Klammerorgane.
Tijdschr. Ent. 61:45-53, pl.6.

Riley, N.D.,1929 : Revisional notes on the genus Heliophorus with descriptions of new forms
J. Bombay nat. Hist. Soc. 33(2):384-402.

Yoshino, K.,1997 : New Butterflies from China 2
Neo Lepidoptera 2:1-8.

Huang, H.,1999 : Some new butterflies from Chian-1 (Rhopalocera).
Lambillionea 99:642-676.

Yago, M. & Monastyrskii, A.L.,2002 : Comparative morphology and identification of the subgenus Kulua, with description of a new species from Vietnam (Lepidoptera, Lycaenidae, Heliophorus).
Tijdschr. Ent. 145:145-171.

Yago, M., Wakabayashi, M., Tanaka, B. & Monastyrskii, A.L.,2005 : Species biodiversity and life histories of the genus Heliophorus (Lepidoptera: Lycaenidae) in Vietnam.
Report on Insect Inventory Project in Tropic Asia (TAIIV)(2005):365-370.

♀, Chiang Mai, Thailand.
♀, Chiang Mai, Thailand.

2006.02.26 - 2023.05.31.