♂ (wsf), Tak, Thailand.		♂ (wsf), Xaignabouri, Laos.
♂ (wsf), Nan, Thailand.

ON : Hesperia cerata Hewitson, 1876 OD : Ent. mon. Mag. 13:152. TL : 'Darjeeling' [Sikkim]. (NHML) Distribution : Sikkim, Assam, Myanmar, Thailand, Laos, Cambodia, Vietnam.

[ THAILAND ]
Halpe cerata ; Godfrey,1930 : 379. (Prae: Me Song forest; Chiang Rai)
Thoressa cerata ; Evans,1949 : 253. (Siam)
Thoressa cerata ; Pinratana,1985 : 52, pl.18, figs.95,♂,♂(Un). (Nakhon Nayok; Nakhon Ratchasima; Phetchabun)
Thoressa cerata ; Ek-Amnuay,[2007] : 774, pl.356, figs.H115,♂,♂(Un),♀,♀(Un). (Phrae)
Thoressa cerata ; Kimura et al.,2011 : 54, figs.♂,♂(Un). (Thung Saleng Luang; Kao Yai)
Thoressa cerata ; Ek-Amnuay,2012 : 826, pl.381, figs.H112,♂,♂(Un),♀,♀(Un). (Phrae)
Thoressa cerata ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Kanchanaburi; Saraburi ; Nakhon Nayok) (accessed: 2023.07.13)

[ LAOS ]
Thoressa cerata ; Osada, Uémura & Uehara,1999 : 223, pl.137, fig.♂(Un). (Xaignabouri)
Thoressa cerata ; Nakamura & Wakahara,2012 : 58.
Pedesta cerata ; Onodera,2022 : 110, pl.248, figs.♂,♂(Un). (Bolikhamxai: Thabok)

[ CAMBODIA ]
Thoressa cerata ; Chartier & Kosterin,2022 : 125, fig.7D. (Mondulkiri)

[ VIETNAM ]
Thoressa cerata ; Devyatkin & Monastyrskii,1999 : 165. (Na Hang; Ba Be)
Thoressa cerata ; Miyazaki, Saito & Saito,2007b : 10, fig.H-59,♂. (Lam Dong: Madagui; Bin Thuan: Dong Tien)
Thoressa cerata ; Monastyrskii & Devyatkin,2015 : 77. (N / C)

[ THAILAND ]
Chiang Mai : 4♂ (incl. photo ).

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Nan : 1♂.

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Phetchabun : 1♂.

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Tak : 1♂.

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[ LAOS ]
Bolikhamxai : 1♂ (photo by H.Onodera).

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Xaignabouli : 1♂.

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The butterfly is locally not rare in montane forests at moderate elevations (Alt. 550 - 1000m). Males occasionally come to the banks of streams and puddles to suck water.
Although the morphology of the male genitalia suggests that this taxon is likely to be included in Pedesta, I tentatively treat it as Thoressa since DNA analysis has not been performed. Further taxonomic and distributional studies are needed.

Hewitson, W.C.,1876 : Notes on Mr. Atkinson's collection of East Indian Lepidoptera, with Descriptions of new species of Rhopalocera.
Ent. mon. Mag. 13:149-152.

Evans, W.H.,1949 : A catalogue of the Hesperiidae from Europe, Asia and Australia in the British Museum (Natural History).
i-xix+1-502, pls.1-35. London.

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

1999.09.04 - 2024.02.29.