♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Mae Hong Son, Thailand.		♀, Phetchabun, Thailand.
♂, Lam Dong, Vietnam. (photo by K.Saito)		♀, Vinh Phuc, Vietnam. (photo by K.Saito)
♂, Phetchaburi, Thailand.		♂, Yala, Thailand.

ON : Nacaduba dana de Nicéville,[1884] OD : J. asiat. Soc. Bengal, Pt.2. 52(2/4):73-74, pl.1, fig.15,♂. TL : Bhutan. Distribution : Sri Lanka, S.India, Nepal, Bhutan, Sikkim to Myanmar, Andamans, Thailand, Laos, Vietnam, Yunnan, W.Malaysia, Singapore, Borneo, Sumatra, Java, Palawan, Moluccas.

Nacaduba ardates var.dima Rhe Philipe,1911 : J. Bombay nat. Hist. Soc. 20(3):764. TL. Naga Hills. (NHML)
Petrelaea dana varia Toxopeus,1929 : Tijdschr. Ent. 72(3/4):242. TL. Java.

[ THAILAND ]
Petrelaea dana dana ; Shirôzu & Saigusa,1962 : 71-72, pl.12, figs.91,♂,92,♂(Un), Textfig.34,♂genitalia. (Srakeo [Sa Kaeo])
Petrelaea dana dana ; Pinratana,1981 : 67, pl.11, figs.3,♂,4,♂(Un). (Chiang Mai; Mae Hong Son; Kanchanaburi; Yala)
Petrelaea dana dana ; Yamaguchi & Aoki,2000 : 257, fig.186,♂(Un). (Mukdahan: Phu Pha Phung)
Petrelaea dana dana ; Ek-Amnuay,[2007] : 586, pl.265, figs.L149,♂,♂(Un). (Wiang Pa Pao)
Petrelaea dana ; Ek-Amnuay,2012 : 610, pl.276, figs.L174,♂,♂(Un). (Wiang Pa Pao)
Petrelaea dana dana ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Petrelaea dana ; Kimura et al.,2014 : 156, figs.♂,♂(Un). (Doi Pha Hom Pok; Chiang Dao; Than To WF.)
Petrelaea dana ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Saraburi; Nakhon Nayok; Chanthaburi) (accessed: 2021.06.18)

[ LAOS ]
Petrelaea dana dana ; Motono & Negishi,1989 : 73, pl.104, figs.A3,♂,A4,♂(Un). (Pakse; Vang Vieng; Phatong)
Petrelaea dana dana ; Osada, Uémura & Uehara,1999 : 216, pl.111, figs.♂,♂(Un). (Nhahin)
Petrelaea dana dana ; Nimura & Wakahara,2005 : 46. (Namdhua)
Petrelaea dana ; Nakamura & Wakahara,2012 : 52.

[ VIETNAM ]
Nacaduba dana ; Metaye,1957 : 90. (no loc.)
Petrelaea dana dana ; Miyazaki, Saito & Saito,[2007] : 57, fig.L-65,♂. (Lam Dong: Dambri; Bin Thuan: Dong Tien)
Petrelaea dana dima ; Monastyrskii & Devyatkin,2015 : 54. (C: Quang Binh ; Lam Dong / S)
Petrelaea dana dima ; Saito et al.,2017 ; 79. (S: Nui Cam)

[ THAILAND ]
Mae Hong Son : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 4♂ 1♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phrae : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chaiyaphum : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Trat : 1♂ (photo by E.Ikari).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phetchaburi : 3♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Surat Thani (Koh Phangan dist.) : 1♂ (photo by A.Giudici).

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

[ VIETNAM ]
Vinh Phuc : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lam Dong : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is not uncommon in montane forests at low to moderate elevations (Alt.30m - 1200m).
The male genitalia of the populations between continental region and Yala, P.Thailand are quite different. I am tentatively treating them as the same taxon, however further taxonomic study is needed.

de Nicéville, C.L.A.,[1884] : On new and little-known Rhopalocera from the Indian Region.
J. asiat. Soc. Bengal, Pt.2. 52(2/4):65-91. pls.1,9,10.

Rhe Phillipe, G.W.V.,1911 : Notes on some Butterflies from the Indian Region.
J. Bombay nat. Hist. Soc. 20(3):753-769.

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

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.

Fujioka, T. & H. Chiba,1988 : Notes on the Distributions of Some Japanese Butterflies
Spec. Bull. Lep. Soc. Jap. (6):141-149. (in Japanese)

Fujioka, T.,2012 : Rare, Local, and Little Known Butterflies from Japan (21) Petrelaea tombugensis Rober,1886 from Bonin Islands
Butterflies (S.fujisanus) 59:6-13. (in Japanese)

♂, Phrae, Thailand.	♂, Surat Thani, Thailand. (photo by A.Giudici)

1999.07.11 - 2021.08.31.