♂, Ranong, Thailand.		♀, Ranong, Thailand.
♂, Nakhon Si Thammarat, Thailand.		♀, Ranong, Thailand.
♂ genitalia, Ranong, Thailand.

ON : Isma obscura Distant, 1886 OD : Rhop. malayana :386, pl.35, fig.19. TL : Singapore. (♂, NHML) Distribution : P.Thailand (Ranong and Southward), W.Malaysia, Tioman, {Singapore}. ● ssp.bicolor ● ssp.obscura

[ THAILAND ]
Isma vulso bicolor ; Godfrey,1930 : 375-376. (Nakhon Sri Thammarat)
Isma vulso bicolor ; Godfrey,1932a : 276. (P)
Isma obscura obscura ; Pinratana,1985 : 75, pl.25, fig.157b♂. (Surat Thani)
Isma protoclea bicolor ; Ek-Amnuay,[2007] : 796, pl.365, figs.H184,♂,♂(Un),♂(Un),♀. (Ranong; Yala)
Isma protoclea obscura ; Kimura et al.,2011 : 76, figs.♂,♂(Un),♀,♀(Un). (Muang Shone; Khlong Naka)
Isma protoclea bicolor ; Ek-Amnuay,2012 : 853, pl.394, figs.H181,♂,♂(Un),♂(Un),♀(Un). (Ranong; Yala)
Isma protoclea obscura ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, figs. (Nakhon Si Thammarat) (accessed: 2023.08.04)

[ THAILAND ]
Ranong : 5♂ 2♀.

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Nakhon Si Thammarat : 2♂.

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Yala : 2♂.

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The butterfly is locally not rare in montane forests at low to moderate elevations (Alt. 30 - 1000m). Males are territorial on shrubs.

Distant, W.L.,1882-1886 : Rhopalocera Malayana : a Description of the Butterflies of the Malay Peninsula.
London, Author, Penang, Logan : xvi+482+[4]pp, 46 pls.

Maruyama, K.,1991 : Butterflies of Borneo vol.2, No.2. Hesperiidae, Addndum of vol.1.
XII+89 pp(Japanese text), 48 pls, XII+83 pp (English text) + 1.
Tobishima corporation. Tokyo, Japan.

♂, Nakhon Si Thammarat, Thailand. (photo by A.Giudici)	♂ (territorial behavior), Nakhon Si Thammarat, Thailand.

2017.12.31 - 2023.08.31.