♂ (dsf), Chiang Mai, Thailand.		♀ (dsf), Chiang Mai, Thailand.
♂ (dsf), Chiang Mai, Thailand.		♀ (dsf), Chiang Mai, Thailand.
♂ (wsf), Chiang Mai, Thailand.		♀ (wsf), Chiang Mai, Thailand.
♂, Mae Hong Son, Thailand. (photo by TME)		♂, Bac Can, Vietnam. (photo by TME)

ON : Ypthima affectata Elwes & Edwards, 1893 OD : Trans. ent. Soc. Lond. 41(1):30-31, pl.1, fig.20. TL : Terria Ghat ; Mamloo, Khasia Hills. (NHML) Distribution : Assam, Myanmar, Thailand, Laos, Vietnam.

Syntypes 1♂ 2♀, Terria Ghat and Mamloo, in the Khasias. 1500'-3000'. (NHML)

[ THAILAND ]
Ypthima iarba ; Aoki & Uémura,1984 : 84. figs.11h-j, 15(♂genitalia), 31,♂. (Mae Hong Son: Mae Hong Son; Loei: Nam Nao; Nakhon Sri Thammarat: Lan Saka)
'Ypthima iarba eupeithes ; Ek-Amnuay,2012 : 300, pl.122, fig.N136,♂(W.Java,Un).'
Ypthima iarba ; Kimura et al.,2016 : 196, figs.♂,♂(Un),♂,♂(Un),♂,♂(Un),♀,♀(Un). (Mae Hong Son; Doi Suthep; Maethro; Lansaka; Than To WF.)

[ LAOS ]
Ypthima affectata ; Uémura,2011 : 3. (C: Namkata)
Ypthima affectata ; Nakamura & Wakahara,2012 : 49, pl.9, figs.Sa-81,♂,♂(Un),♀,♀(Un). (Namkata)
Ypthima affectata ; Onodera,2022 : 61, pl.181, figs.♀,♀(Un). (Luang Phabang: Chamlong)

[ VIETNAM ]
Ypthima affectata ; Uémura & Monastyrskii,2004 : 25, figs.2m, 5.5,♂(wsf),5.6,♂(dsf). (N: Ba Be; Lung Li; Na Hang / C: Pu Mat)
Ypthima affectata ; Monastyrskii,2005 : 113-114, pl.30, figs.2a♂,2b♂(Un). (N: Ba Be; Bac Can; Na Hang / C: Pu Mat)
Ypthima affectata ; Monastyrskii & Devyatkin,2015 : 26. (N: Tuyen Quang / C: Nghe An)

[ THAILAND ]
Mae Hong Son : 1♂ (photo by TME).

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Chiang Mai : 14♂ 10♀.

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Chaiyaphum : 2♀.

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[ VIETNAM ]
Bac Can : 1♂ (photo by TME).

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The butterfly is locally not rare in montane semi-dried forests at moderate elevations (Alt. 700 - 1000m) and is found in darker places than other species.
This species is characterized by a darker ground color on the upper side of both wings than Ypthima similis, however both species are quite similar, and identification requires examination of the male genitalia.

Elwes, H.J. & Edwards, J.,1893 :
A revision of the genus Ypthima with special reference to the characters afforded by the ♂ genitalia.
Trans. ent. Soc. Lond. 41(1):1-54, pls.1-.3.

Uémura, Y.,2020 : A synonymic list of the sakra-group of the genus Ypthima Hübner (Lepidoptera: Nymphalidae, Satyrinae)
Bull. Toyosato Mus. Ent. (30):1-20.

♂ (dsf), Chiang Mai, Thailand.	♀ (dsf), Chiang Mai, Thailand.
♂ (dsf), Chiang Mai, Thailand.	♂ (wsf), Chiang Mai, Thailand.
♀ (wsf), Chiang Mai, Thailand.	♀ (wsf), Chiang Mai, Thailand.

2006.01.25 - 2023.07.31.