♂, Chiang Mai, Thailand.		♂, Chiang Mai, Thailand.
♂, Nan, Thailand.		♂, Chiang Mai, Thailand.
♂, Phrae, Thailand.		♂, Chanthaburi, Thailand.

ON : Nacaduba angusta f.albida Riley & Godfrey,1925 OD : Entomologist 58:141, pl.3, fig.2,♂. TL : Phar Mieng N.Siam. (♂, NHML) Distribution : Myanmar, Thailand, Laos, Vietnam. ● ssp.albida ● ssp.kerriana

[ THAILAND ]
Nacaduba angusta kerriana ; Godfrey,1930 : 320-321. (Chonburi: Hup Bon)
Nacaduba angusta f.albida ; Godfrey,1930 : 321. (Chiang Rai: Phar Mieng)
Nacaduba angusta kerriana ; Pinratana,1981 : 60, pl.10, figs.8,♀,9,♂(Un) ; pl.35, figs.13,♂,14,♀,18,♂(Un),19,♀(Un). (Chaiyaphum; Chanthaburi; Nakhon Ratchasima) (in part)
Nacaduba angusta albida ; Pinratana,1981 : 60. not fig. (Chiang Mai)
Nacaduba angusta kerriana ; Ek-Amnuay,[2007] : 578,580, pl.262, figs.L128a♂,♂(Un),♂,♂(Un). (Lamphun)
Nacaduba angusta albida ; Ek-Amnuay,2012 : 602, pl.272, figs.L153a♂,♂(Un),♂,♂(Un). (Lamphun)
Nacaduba angusta albida ; Kimura et al.,2014 : 156, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un),♀,♀(Un),♀,♀(Un). (Thung Saleng Luang; Phu Khiewo; Kao Soi Dao; Kao Khiewo)

[ LAOS ]
Nacaduba angusta ssp. ; Motono & Negishi,1989 : 72, pl.102, fig.B6,♀(Un). (Luang Prabang; Phatong; Vientiane)
"Nacaduba angusta albida ; Osada, Uémura & Uehara,1999 : 215, not fig. (list only)"
Nacaduba angusta albida ; Nakamura & Wakahara,2012 : 52.
Nacaduba angusta albida ; Miyamoto & Nakamura,2016 : 24, figs.12A♂,B♂(Un). (Bolikhamxai; Champasak)

[ VIETNAM ]
Nacaduba kerriana angusta ; Metaye,1957 : 90. (no loc.)
Nacaduba angusta albida ; Miyazaki, Saito & Saito,[2007] : 56, figs.L-49,♂,♀. (Lam Dong: Gung Re)
Nacaduba angusta albida ; Monastyrskii & Devyatkin,2015 : 53. (C / S: Binh Phuoc)

[ THAILAND ]
Chiang Mai : 10♂ (incl.photo).

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Phrae : 1♂.

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Nan : 2♂.

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Loei : 1♂.

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Tak : 1♂.

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Kanchanaburi : 1♂.

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Chanthaburi : 1♂.

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The butterfly is locally not rare in montane forest at low to moderate elevations (Alt.350m - 1300m) and is occasionally found on the hilltops.
The male white patch on the upperside is highly variable and some examples absent it.

Riley, N.D. & E.J. Godfrey,1925 : New Rhopalocera from Siam and Hainan.
Entomologist 58:140-143, pl.3.

Tite, G.E.,1963 : A Synonymic List of the Genus Nacaduba and Allied Genera (Lepidoptera: Lycaenidae).
Bull. Br. Mus. nat. Hist. (Ent.) 13(4):69-116, 91 tf, 2 pls. London.

♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.

1999.07.11 - 2021.06.30.