♂, Dong Nai, Vietnam. (photo by K.Saito)		♀, Lam Dong, Vietnam. (photo by K.Saito)
♂, Nan, Thailand.		♀, Ranong, Thailand.
♀, Yala, Thailand.		♀, Yala, Thailand.
♂, Ranong, Thailand.		♂ genitalia, Nan, Thailand.

ON : Nacaduba sanaya naevia Toxopeus, 1929 OD : Tijdschr. Ent. 72(3/4):232-233. TL : W.Java. Distribution : India (Assam) to Myanmar, Nicobars, Thailand, Laos, Cambodia, Vietnam, Langkawi, W.Malaysia, Singapore, Borneo, Sumatra, Java.

Nacaduba sanaya elioti Corbet, 1938 : Trans. R. ent. Soc. Lond. 87(5):133-134, pl.1, figs.25,♀, 32,♂. TL. Singapore. (NHML)
Nacaduba sanaya thalia Corbet, 1938 : Trans. R. ent. Soc. Lond. 87(5):134. TL. Sarawak, Borneo. (NHML)

elioti ; Holotype ♂, 11.Jun.1936. Singapore, Malay Peninsula. J.N.Eliot ; Allotype ♀, 26.Feb.1936. Singapore, Malay Peninsula. J.N.Eliot
thalia ; Holotype ♂, 10.Oct.1932. Mt.Dulit, Sarawak, Borneo. (NHML)

[ THAILAND ]
Nacaduba sanaya elioti ; Pinratana,1981 : 61, pl.10, fig.13,♂(Un) ; pl.30, fig.4,♀. (Nakhon Sri Thammarat; Phuket; Ranong; Sakon Nakhon; Trang)
Nacaduba sanaya elioti ; Yamaguchi & Aoki,2002 : 35, fig.102,♀. (Ubon Ratchathani: Ban Na Pho Krang; Phu Chong Na Yoi; Phu Hin Dang)
Nacaduba pactolus continentalis ; Ek-Amnuay,[2007] : pl.262, figs.L129,♀,♀(Un). (in part)
Nacaduba sanaya elioti ; Ek-Amnuay,[2007] : 580, pl.263, figs.L133,♂,♂(Un). (in part)
Nacaduba sanaya naevia ; Ek-Amnuay,2012 : 604, pl.273, figs.L157,♂,♂(Un),♀,♀(Un). (Kaeng Krachan; Ranong; Narathiwat)
Nacaduba sanaya elioti ; Kimura et al.,2014 : 158, figs.♂,♂(Un),♀,♀(Un),♀,♀(Un). (Khlong Tariew; Kam Puan; Khlong Naka; Kao Luang; Ka Chong; Tarutao Is; Than To WF.)
Nacaduba sanaya naevia ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, fig. (Sa Kaeo) (accessed: 2023.04.22)
'Nacaduba sanaya naevia ; Küppers & Janikorn,2020 : 163, fig.Abb.L-202. (Phang Nga)'

[ LAOS ]
Nacaduba sanaya elioti ; Osada, Uémura & Uehara,1999 : 215, pl.111, fig.♂(Un). (Nam Dhua)
Nacaduba sanaya elioti ; Nimura & Wakahara,2005 : 46. (Thabok; Namdhua)
Nacaduba sanaya naevia ; Nakamura & Wakahara,2012 : 52.
Nacaduba sanaya naevia ; Onodera,2022 : 81, pl.212, figs.♂,♂(Un),♀,♀(Un). (Savannakhet; Bolikhamxai: Phon Si)

[ CAMBODIA ]
Nacaduba sanaya naevia ; Monastyrskii et al.,2011 : 130. (Phnom Samkos W.S.)
Nacaduba sanaya elioti ; Chartier & Kosterin,2022 : 121. (Koh Kong; Pursat; Siem Reap)

[ VIETNAM ]
Nacaduba sanaya ; Vu,2003 : 58. (Phu Quoc)
Nacaduba sanaya ; Monastyrskii et al.,2006 : 43. (Thua Thien Hue: Phong Dien)
Nacaduba sanaya naevia ; Miyazaki, Saito & Saito,2006d : 56,57, figs.L-53,♂,♀. (Lam Dong: Dambri; Dong Nai: Thac Mai)
Nacaduba sanaya naevia ; Monastyrskii & Devyatkin,2015 : 53. (C: Thua Thien Hue to Lam Dong / S: Con Son Is; Phu Quoc Is.)

[ THAILAND ]
Nan : 1♂ (genitalia dissected).

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Ranong : 4♀.

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Nakhon Si Thammarat : 1♀.

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Yala : 3♀.

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[ VIETNAM ]
Lam Dong : 1♀.

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Dong Nai : 1♂.

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The butterfly is locally not rare in montane forests at low to moderate elevations (Alt. 30 - 1300m). Females are not rare, but males are hard to find. Males occasionally come to the banks of streams and puddles to suck water. Further distributional research is needed.
It is indistinguishable from allied species by the underside markings. The color on the upperside or the male genitalia need to be examined.

Toxopeus, L.J.,1929 : Lycaenidae Australasiae VI. De Riodinidae en Lycaenidae van het island Java.
Tijdschr. Ent. 72(3/4):215-244.

Corbet, A.S.,1938 : A Revision of the Malayan species of the Nacaduba group of Genera (Lepidoptera: Lycaenidae)
Trans. R. ent. Soc. Lond. 87(5):125-146, pl.1.

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.

♂, Nan, Thailand.

1999.07.11 - 2024.05.31.