♂, Ranong, Thailand.		♀, Ranong, Thailand.
♂, Ranong, Thailand.		♀, Phangnga, Thailand.
♂, Ranong, Thailand.		♀, Ranong, Thailand.
♂, Ranong, Thailand.		♂ genitalia, Ranong, Thailand.

ON : Scobura umbrosa Elwes & Edwards, 1897 OD : Trans. zool. Soc. Lond. 14(4):207-208, pl.19, fig.1,♀. TL : Kina Balu, Borneo. (♀, NHML) Distribution : P.Thailand (Ranong and Southward), Langkawi, W.Malaysia, Borneo, Sumatra, Sipora.

[ THAILAND ]
Isma umbrosa umbrosa ; Pinratana,1985 : 76, pl.25, fig.160,♂,♂(Un). ('Chanthaburi'; Ranong)
Isma umbrosa umbrosa ; Ek-Amnuay,[2007] : 796, pl.366, figs.H188,♂(right),♂(right,Un). (in part).
Isma guttulifera kuala ; Ek-Amnuay,[2007] : pl.366, figs.H189,♀,♀(Un). (in part).
Isma umbrosa umbrosa ; Kimura et al.,2011 : 77, figs.♂,♂(Un). (in part). (Kam Puan; Khlong Naka; Kao Luang)
Isma umbrosa umbrosa ; Ek-Amnuay,2012 : 854, pl.394, figs.H185,♂(right),♂(right,Un). (in part)

[ THAILAND ]
Ranong : 18♂ 3♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phang Nga : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Yala : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Narathiwat : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is locally common in montane forests at low elevations (Alt. 30 - 400m).
Pinratana,1985 recorded it from Chanthaburi, S.E.Thailand, but confirmation is needed.

Elwes, H.J. & Edwards, J.,1897 : A Revision of the Oriental Hesperiidae.
Trans. zool. Soc. Lond. 14(4):101-324, pls.18-27.

1999.09.11 - 2023.08.31.