♂, Nan, Thailand.		♀, Nan, Thailand.
♂, Nan, Thailand.		♀, Nan, Thailand.
♂, Nan, Thailand.		♂, Nan, Thailand.
♂ genitalia, Nan, Thailand.

ON : Lethe insana [sic] caerulescens Mell, 1923 OD : Deut. ent. Zeit. 1923:155. TL : "NO von Kuangtung" [Lianping, Guangdong]. Distribution : N.Thailand (Nan), Laos, Vietnam, Guangxi, Hainan, Guangdong, Fujian, Zhejiang, S.Anhui, Jiangxi. ● ssp.caerulescens ● ssp.annamhyrania

[ THAILAND ]
Lethe insana [sic] insana [sic] ; Ek-Amnuay,[2007] : 248, pl.96, figs.S28,♂,♂(Un),♀,♀(Un). (Doi Phu Kha)
Lethe insana [sic] insana [sic] ; Ek-Amnuay,2012 : 246, pl.95, figs.N64,♂,♂(Un),♀,♀(Un). (Doi Phu Kha)
Lethe insana [sic] insana [sic] ; Ek-Amnuay,2012 : 246, pl.95, figs.N64,♂,♂(Un),♀,♀(Un). (Doi Phu Kha)
Lethe isana isana ; Kimura et al.,2016 : 171, figs.♂,♂(Un). (Nan prov.)

[ LAOS ]
Lethe bojonia ; Masui & Uehara,1994 : 5, figs.11,♂,♂(Un). (Xam Neua)
Lethe insana [sic] ssp. ; Osada, Uémura & Uehara,1999 : 210, pl.90, fig.♂. (Lak Sao)
Lethe insana [sic] ssp. ; Uémura,2003 : 4, fig.25 map. (Xam Neua; Nong Het; Lak Sao)
Lethe insana [sic] insana ; Onodera,2009b : 36-37. (Xieng Kouang: Nam Noen)
Lethe isana isana ; Nakamura & Wakahara,2012 : 48, pl.6, figs.Sa-25,♀,♀(Un). (Near Muang Kham)
Lethe hyrania caerulescens ; Onodera,2022 : 55, pl.166, figs.♂,♂(Un). (Xiengkhouang: Muang Kham)

[ VIETNAM ]
Lethe insana [sic] procris ; Fruhstorfer,1911 : 318. (Tonkin)
Lethe procris ; Vitalis,1919 : 223. (Tonkin)
Lethe insana [sic] f. procris ; Dubois & Vitalis,1924 : 28. (Tonkin: monts Mauson)
Lethe insana [sic] baucis f. procris ; Metaye,1957 : 103. (N)
Lethe insana [sic] ; Monastyrskii,2005 : 56-57, pl.14, figs.1a♂,1b♂(Un),1c♀,1d♀(Un). (N: Hoang Lien; Tam Dao; Ba Be; Pu Luong / C: Vu Quang) (in part)
Lethe insana [sic] ; Monastyrskii & Devyatkin,2015 : 22. (N / C)

[ THAILAND ]
Nan : 16♂ 7♀, (2♂ genitalia dissected).

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The butterfly is locally common in montane forests at high elevations (Alt. 1700 - 2200m). Males are territorial on trees.
I treat the populations south of Bach Ma in C. Vietnam as ssp.annamhyrania.

Mell, R.,1923 : Noch unbeschriebene Lepidopteren aus Sudchina II
Deut. ent. Zeit. 1923:153-160.

Lang, S.Y. & Lamas, G.,2016 : What is Lethe hyrania (Kollar,1844) (Lepidoptera, Nymphalidae, Satyrinae)?
Zootaxa 4072(3):396-400.

Lang, S.Y.,2017 : The Nymphalidae of China (Lepidoptera, Rhopalocera), Part II. Satyrinae (partim), Satyrini (partim), Subtribes Eritina, Ragadiina, Lethina, Parargina.
Tshikolovets. Czech Rep. 200pp, 24 col + 15 b/w plates, 170 distribution maps.

1998.12.18 - 2025.03.31.