ON : Lethe dura mansonia Fruhstorfer, 1911 OD : in Seitz, Grossschmett. Erde 9:314, t.99a. TL : "Tonkin, Mansonberge" [Mau Son Mt., Lang Son, N.Vietnam]. Distribution : Laos, Vietnam, Hainan. ● ssp.dura ● ssp.mansonia

[ LAOS ]
Lethe dura mansonia ; Osada, Uémura & Uehara,1999 : 210, pl.90, figs.♂,♀. (Xam Neua)
Lethe dura mansonia ; Uémura,2003 : 3, fig.17 map. (Xam Neua)
Lethe dura mansonia ; Onodera,2009b : 36-37, fig.25,♂,♂(Un). (Xieng Kouang: Nam Noen)
Lethe dura mansonia ; Nakamura & Wakahara,2012 : 48.
Lethe dura mansonia ; Onodera,2022 : 55, pl.164, figs.♂,♂(Un). (Xiengkhouang: Muang Kham)

[ VIETNAM ]
Lethe mansonia ; Vitalis,1919 : 222. (Tonkin)
Lethe dura f. mansonia ; Dubois & Vitalis,1924 : 28. (Tonkin)
Lethe dura mansonia ; Metaye,1957 : 102. (N)
Lethe dura mansonia ; Monastyrskii,2005 : 48-19. pl.10, fig.3c♂. (N: Mauson Mt; Ba Vi; Ba Can; Pu Luong / C: Pu Hoat)
Lethe dura mansonia ; Monastyrskii & Devyatkin,2015 : 22. (N: Lang Son / C: to Kon Thum)

Lang (2020) treated the population from Laos as ssp.dura. Further taxonomic study is needed.

Fruhstorfer, H.,1911 : 4. Familie: Satyridae in Seitz, Gross-Schmett. Erde 9
313-328. (25.Apr.1911)

Lang, S.Y.,2020 : Notes on Lethe sura (Doubleday, 1849) and Lethe dura (Marshall, 1882) from China (Lepidoptera, Nymphalidae, Satyrinae).
Atalanta 51(1/2):63-67.

1998.12.10 - 2025.02.28.