Potanthus flava alcon  (Evans, 1932)

Potanthus flava alcon ♂ Up. Potanthus flava alcon ♂ Un. Potanthus flava alcon ♂ Up. Potanthus flava alcon ♂ Un.
♂, Chiang Rai, Thailand. ♂, Chiang Mai, Thailand.
Potanthus flava alcon ♂ genitalia Potanthus flava alcon ♂ genitalia
♂ genitalia, Chiang Mai, Thailand.

ON : Padraona flava alcon Evans, 1932
OD : Ident. Indian Butts. (2nd ed.) : 403.
TL : Karens. (♂, NHML)
Distribution : Naga Hills, Myanmar (S.Shan States ; Karens ; Ataran),
Thailand, Vietnam, W.Malaysia.
Potanthus flava alcon map

Records taken from Literature

'Potanthus flavus alcon ; Pinratana,1985 : 101, pl.34, fig.228,♀. (no loc.)'
Potanthus flavus alcon ; Kimura et al.,2011 : 97, figs.♂,♂(Un). (Doi Pha Hom Pok; Khun Lao Villege)
Potanthus flavus alcon ; Ek-Amnuay,2012 : 892, pl.412, figs.H266,♂,♂(Un) [photo from Kimura et al.,2011]. (Wiang Pa Pao)

Potanthus flavus ssp. ; Kishi et al.,2021 : 52, figs.11,♂,11v♂(Un). (Lam Dong: Nong Trai, Da Lat)

Specimens Examined

Chiang Rai : 1♂.
JanFebMarAprMayJun JulAugSepOctNovDec

Chiang Mai : 6♂.
JanFebMarAprMayJun JulAugSepOctNovDec


The butterfly is not rare in montane forest at moderate to high elevations (Alt. 1100m - 1800m).
According to Kishi et al.,2021, the individual from C.Vietnam seems to be slightly different. I tentatively treat it as this taxon, but taxonomic study is needed.

The species of this genus are so similar that identification by male genitalia is required. Therefore, records that do not examine the male genitalia cannot be adopted. In addition, although there are many field photos, most are either misidentified or unidentifiable and therefore cannot be used as records.


Evans, W.H.,1932 : The identification of Indian butterflies. second edition revised.
Bombay nat. Hist. Soc., Madras : 10+454pp, 32 pls, 9f.

Potanthus flava alcon ♂
♂, Chiang Rai, Thailand.

2018.05.31 - 2023.10.31.

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