♂, Chiang Mai, Thailand.		♀, Nan, Thailand.
♂, Chiang Mai, Thailand.		♀, Ranong, Thailand.

ON : Lethe minerva tritogeneia Fruhstorfer, 1911 OD : in Seitz, Grossschmett. Erde 9:318. TL : Tenasserim. Distribution : Sikkim to Myanmar, Thailand, Laos, Cambodia, Vietnam, S.Yunnan.

[ THAILAND ]
Lethe minerva ssp. ; Godfrey,1916 : 121. (Prae: Me Song forest)
Lethe minerva tritogeneia ; Godfrey,1927 : 121. (N)
Lethe minerva tritogeneia ; Pinratana,1988 : 14, pl.15, figs.29,♂,♀,♀(Un). (Chiang Mai; Phitsanulok; Kanchanaburi; Nakhon Ratchasima; Nong Khai; Phetburi; Ranong)
Lethe minerva tritogeneia ; Yamaguchi & Aoki,2002 : 21, fig.57,♂. (Mukdahan: Ban Lao Kram; Ban Na Lak)
Lethe minerva tritogeneia ; Yamaguchi, Aoki & Akiyama,2005 : 48. (Mukdahan: Ban Na Lak)
Lethe minerva tritogeneia ; Katsuyama et al.,2005 : 68, fig.117,♂. (Umphang)
Lethe minerva tritogeneia ; Katsuyama et al.,2006 : 48, fig.86,♂. (Nan: Ban Nam Poon)
Lethe minerva tritogeneia ; Ek-Amnuay,[2007] : 250, pl.97, figs.S32,♂,♂(Un),♀,♀(Un). (Chiang Mai)
Lethe minerva tritogeneia ; Uémura,2010 : 3.
Lethe minerva tritogeneia ; Ek-Amnuay,2012 : 250, pl.97, figs.N68,♂,♂(Un),♀,♀(Un). (Chiang Mai)
Lethe minerva tritogeneia ; Okamoto et al.,2013 : 9. (Kanchanaburi: Mae Klong Station)
Lethe minerva tritogeneia ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Kanchanaburi; Ratchaburi) (accessed: 2023.06.30)
Lethe minerva tritogeneia ; Kimura et al.,2016 : 172, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un). (Doi Suthep; Doi Pa Chang; Thung Saleng Luang; Bung Kahan; Phu Khiewo; Wan Nam Khiewo; Sai York Noi; Kam Puan; Khlong Naka)
Lethe minerva tritogeneia ; Küppers & Janikorn,2017 : 262-263, figs.Abb.S-080♂(Un),S-081♀(Un),S-082♂(Un),S-083♂(Un). (Phang Nga)

[ LAOS ]
Lethe minerva f. tritogeneia ; Dubois & Vitalis,1924 : 29. (Laos)
Lethe minerva (ssp.tritogeneia ?) ; Motono & Negishi,1989 : 64, not fig. (list only)
Lethe minerva tritogeneia ; Osada, Uémura & Uehara,1999 : 210, pl.91, figs.♂,♀. (Thabok; Phon Si)
Lethe minerva tritogeneia ; Uémura,2003 : 4, fig.26,map, figs.37,♂,38,♀. (Nam Pouy; Ban Keun; Ban Nakah; Thabok; Lak Sao)
Lethe minerva tritogeneia ; Uémura,2006 : 3, fig.12,map. (Ban Nakha; Phou Phanang; Vieng Thong)
Lethe minerva tritogeneia ; Uémura,2011 : 2. (C: Tad Moon / S: Attapu to border 74km)
Lethe minerva tritogeneia ; Nakamura & Wakahara,2012 : 48.
Lethe minerva tritogeneia ; Onodera,2022 : 56, pl.166, figs.♂,♂(Un). (Bolikhamxai: Thabok)

[ CAMBODIA ]
Lethe minerva tritogeneia ; Monastyrskii et al.,2011 : 128. (Phnom Samkos W.S.)
Lethe minerva tritogeneia ; Kosterin,2019b : 33. (Ratanakiri)
Lethe minerva tritogeneia ; Chartier & Kosterin,2022 : 115. (Koh Kong; Pursat; Ratanakiri)

[ VIETNAM ]
Lethe minerva ssp. ; Godfrey,1919 : 466.
Lethe minerva tritogeneia ; Monastyrskii & Devyatkin,2000 : 481. (Lam Dong: Dalat)
Lethe minerva tritogeneia ; Monastyrskii,2005 : 57, pl.15, figs.1a♂,1b♂(Un),1c♀,1d♀(Un). (C: Da Lat / S: Cat Tien; Nghia Trung)
Lethe minerva tritogeneia ; Miyazaki, Saito & Saito,2006c : 31, figs.S-15,♂,♀. (Lam Dong: Dambri)
Lethe minerva tritogeneia ; Monastyrskii & Devyatkin,2015 : 22. (C / S)

[ THAILAND ]
Chiang Rai : 1♀.

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Chiang Mai : 6♂ 2♀ (incl. photo & photo by A.Giudici).

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Phrae : 2♂.

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Nan : 1♀.

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Kanchanaburi : 2♂ 2♀.

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Trat : 1♀ (photo by THNHM).

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Ranong : 1♂.

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[ LAOS ]
Oudomxai : 2♂ (photo by H.Onodera).

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Bolikhamxai : 1♂ (photo by H.Onodera).

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The butterfly is locally common in montane forests at low to moderate elevations (Alt. 30 - 1300m) and is especially found in and around bamboo forests.

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

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand. (photo by A.Giudici)
♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.

1998.12.26 - 2024.03.31.