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

ON : Pterygospidea angulata C.Felder, 1862 OD : Verh. zool.-bot. Ges. Wien 12:488. TL : Hong Kong. (♂, NHML) Distribution : Sri Lanka, S.India to Myanmar, Thailand, Laos, Cambodia, Vietnam, Hainan, Hong Kong, S.China, Langkawi, W.Malaysia, Singapore, Borneo, Sumatra, Java, Bali.

Achlyodes sura Moore, 1866 : Proc. zool. Soc. Lond. 1865(3):786. TL. N.E.Bengal. (♂, NHML)
Odontoptilum angulata mahabini Fruhstorfer, 1909 : Ent. Zeit. 23(39):172. TL. West-Java. (♂, NHML)
Odontoptilum angulata sumatrana Fruhstorfer, 1909 : Ent. Zeit. 23(39):172. TL. NO.Sumatra. (♂, NHML)

[ THAILAND ]
Odontoptilum angulata ; Godfrey,1916 : 142. (Prae: Me Song forest; Chonburi: Sriracha)
Odontoptilum angulata ; Godfrey,1927 : 127. (N)
Odontoptilum angulata ; Godfrey,1930 : 366. (Prae: Me Song forest; Chonburi: Sriracha; Chiang Mai; Me Wong)
Odontoptilum angulata ; Godfrey,1932a : 275. ('Tasao'(?), Chumporn)
Odontoptilum angulata angulata ; Evans,1949 : 158. (Siam)
Odontoptilum angulatum angulatum ; Pinratana,1985 : 45, pl.16, fig.80,♂. (Chiang Mai; Nakhon Nayok; Nakhon Ratchasima; Ratchaburi; Chonburi; Chanthaburi; Yala)
Odontoptilum angulatum angulatum ; Yamaguchi & Aoki,2000 : 249, fig.12,♂. (Mukdahan: Phu Pha Thaep; Phu Pha Phung)
Odontoptilum angulata angulata ; Yamaguchi & Aoki,2002 : 11. (Ubon Ratchathani: Kaeng Tana; Kaeng E-Keow; Phu Hin Dang; Mukdahan: Ban Lao Kram)
Odontoptilum angulatum angulatum ; Yamaguchi, Aoki & Akiyama,2005 : 43. (Mukdahan: Phu Ma No Rom)
Odontoptilum angulatum angulatum ; Ek-Amnuay,[2007] : 770, pl.354, figs.H97,♂,♂(Un),♀[♂]. (Chiang Mai)
Odontoptilum angulatum angulatum ; Les Day,2011-2022 : Samui Butterflies, figs.[♂],[♂](Un). (Koh Samui) (accessed: 2019.06.01)
Odontoptilum angulatua angulatua ; Kimura et al.,2011 : 49, figs.♂,♂(Un),♀,♀(Un). (Chiang Dao; Thung Saleng Luang; Phu Khiewo; Nakohn Nayok; Wan Nam Khiewo; Kao Soi Dao; Kao Khiewo; Sai York Noi; Kanchanaburi; Kaeng Krachan; Than To WF.)
Odontoptilum angulatum angulatum ; Ek-Amnuay,2012 : 820, pl.379, figs.H94,♂,♂(Un),♀. (Chiang Mai; Sam Lan WF.)
Odontoptilum angulata angulata ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Odontoptilum angulatum angulatum ; Küppers & Janikorn,2017 : 82-83, figs.Abb.H-091-092. (Phang Nga)
Odontoptilum angulata angulata ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2024- : Butterflies of Thailand, figs., Early Stages. (Sa Kaeo; Saraburi; Chanthaburi; Trat; Phetchaburi) (accessed: 2024.06.17)

[ LAOS ]
Odontoptilum angulatum angulatum ; Motono & Negishi,1989 : 80, pl.112, figs.A3,♂,A4,♂(Un). (Vang Vieng; Phatong; Pakse; Nam Ngum Dam; Dan Sum, Vientian)
Odontoptilum angulata angulata ; Osada, Uémura & Uehara,1999 : 222, pl.137, figs.♂,♀. (Oudomxay; Saravan)
Odontoptilum angulata angulata ; Nakamura & Wakahara,2012 : 58.
Odontoptilum angulata angulata ; Onodera,2022 : 109, pl.246, figs.♂,♂(Un), pl.247, figs.♀,♀(Un). (Bolikhamxai: Thabok; Lak Sao)

[ CAMBODIA ]
Odontoptilum angulatum ; Onodera,2007 : 23,29, fig.108,♂. (Rattanakiri: Veun Sai; Siem Reap: Angkor)
Odontoptilum angulatum ; Onodera,2009 63. (Mondolkiri: Bousra)
Odontoptilum angulatum angulatum ; Kosterin,2019 : 99. (Preah Sihanouk)
Odontoptilum angulatum angulatum ; Kosterin,2019b : 33. (Mondulkiri)
Odontoptilum angulatum angulatum ; Kosterin,2020 : 332. (Siem Reap)
Odontoptilum angulata angulata ; Chartier & Kosterin,2022 : 125. (Kampong Thom; Mondulkiri; Preah Sihanouk; Ratanakiri; Siem Reap)

[ VIETNAM ]
Odontoptilum angulata ; Godfrey,1919 : 470. (Daban)
Odontoptilum angulata ; Lemée,1950 : 23. (Hagiang)
Odontoptilum angulata angulata ; Inoué & Kawazoé,1965b ; 95-97, figs.57,♂,58,♂(Un),59,♀,60,♀(Un). (Lagna; Vo Dat; Dinh Quan; Trang Bom; Ben Nom; Pleiku; Col de Blao)
Odontoptilum angulata angulata ; Devyatkin & Monastyrskii,1999 : 162. (Tam Dao; Ba Be; Bu Huong)
Odontoptilum angulata angulata ; Luong et al.,2004 : 13, 87, figs.♂,♂(Un),♀,♀(Un). (Cuc Phuong)
Odontoptilum angulata angulata ; Miyazaki, Saito & Saito,2007b : 7, figs.H-45,♂,♀. (Lam Dong: Dambri; Madagui; Dong Nai: Thac Mai; Bin Thuan: Dong Thien)
Odontoptilum angulata angulata ; Monastyrskii & Devyatkin,2015 : 75. (N / C / S)
Odontoptilum angulata angulata ; Saito et al.,2017 : 76. (S: Nui Cam)

[ THAILAND ]
Mae Hong Son : 3♂.

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Chiang Mai : 7♂ 1♀ (incl. photo).

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Lampang : 1♂ (photo).

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Phrae : 1♂ (photo).

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Nan : 9♂ 3♀.

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Tak : 1♂.

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Chonburi : 1♂.

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Chanthaburi : 5♂.

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Phetchaburi : 2♂ (incl. photo by T.Aoyama).

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Prachuap Khiri Khan : 1♂.

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Yala : 1♂ 1♀ (incl. photo by S.Atdhabhan).

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The butterfly is not rare in secondary and montane forests at low to moderate elevations (Alt. 150 - 1000m). Both sexes visit flowers and males occasionally come to the banks of streams and puddles to suck water. They often fly out from bushes along the trail and rest on the underside of leaves with their wings spread.

Felder, C.,1862 : Verzeichniss der von den Naturforschern der K.K.Fregatte "Novara" gesammelten Macrolepidopteren.
Verh. zool.-bot. Ges. Wien 12:473-496.

Moore, F.,1866 : On the lepidopterous insects of Bengal.
Proc. zool. Soc. Lond. 1865(3):755-822, 3 pls.

Fruhstorfer, H.,1909 : Neue Hesperiden.
Ent. Zeit. 23(39):171-174.

Zhang, J., Cong, Q., Shen, J. & Grishin, N.V.,2022 : Taxonoic changes suggested by the genomic analysis of Hesperiidae (Lepidoptera)
Insecta Mundi 0921: 1-135.

♂ (dsf), Phrae, Thailand.	♀ (dsf), Chiang Mai, Thailand.

1999.09.04 - 2024.06.30.