♂, Mae Hong Son, Thailand.		♀, Chiang Mai, Thailand.
♂, Phetchaburi, Thailand.		♀, Chiang Mai, Thailand.

ON : Hesperia plinius Fabricius, 1793 OD : Ent. syst. 3(1):284. TL : 'Indiis' Distribution : Sri Lanka, Nepal to Myanmar, Thailand, Laos, Cambodia, Vietnam, Hainan, China, Taiwan, Java to E.Australia, Philippines, Bismarks, Solomons, New Hebrides, Mariana, Palau.

Polyommatus lybas Godart, [1824] : in Ency, meth. 9(Ins.)(2):655-656. TL. Timor.
Lycaena hyrcanus C.Felder, 1860 : Sber. Akad. Wiss. Wien 40(11):455. TL. "Amboina" [Ambon Island, Maluku Islands].
Lampides cissioides Murray, 1873 : Ent. mon. Mag. 10:108. TL. "Brisbane" [Brisbane, E.Australia]. (homonym)
Lampides pseudocassius Murray, 1873 : Ent. mon. Mag. 10:126. (replacement name for Lampides cissioides Murray, 1873)
Tarucus leopardus Schultze, 1910 : Philippine J. Sci. 5:161-162, pl.1, fig.9. TL. "Province of Camarines, Luzon" [Luzon, Philippines].
Syntarucus manusi Rothschile, 1915 : Novit. zool. 22:390-391. TL. Manus, Admiralty Islands.
Tarucus plinius plutarchus Fruhstorfer, 1922 : in Seitz, Grossschmett. Erde 9:893, pl.153b. TL. not stated.
Tarucus plinius celis Fruhstorfer, 1922 : in Seitz, Grossschmett. Erde 9:893. TL. "Ost-Celebes" [E.Sulawesi].
Tarucus plinius zingis Fruhstorfer, 1922 : in Seitz, Grossschmett. Erde 9:893. TL. "Insel Buton" [Buton Island, SE.Sulawesi].
Tarucus plinius juvenal Fruhstorfer, 1922 : in Seitz, Grossschmett. Erde 9:893. TL. "Batjan" [Bacan Islands, Maluku Islands].

[ THAILAND ]
Tarucus plinius ; Godfrey,1916 : 137. (Prae: Mae Song Forest)
Syntarucus plinius ; Godfrey,1927 : 125. (N)
Syntarucus plinius ; Godfrey,1930 : 319-320. (Prae: Me Song forest; Chiang Rai; Bangkok)
Syntarucus plinius ; Shirôzu & Saigusa,1962 : 66-67, pl.10, figs.75,♂,76,♂(Un). Textfig.30,♂genitalia. (Chieng Mai; Mae Hoi)
Syntarucus plinius ; Pinratana,1981 : 55, pl.8, figs.15,♂,16,♀,17,♂(Un). (Chiang Mai; Chaiyaphum; Bangkok; Chonburi; Kanchanaburi; Nakhon Ratchasima)
Syntarucus plinius ; Yamaguchi & Aoki,2000 : 257, fig.179,♀. (Mukdahan: Phu Pha Thaep)
Syntarucus plinius ; Yamaguchi & Aoki,2002 : 34. (Mukdahan: Phu Huay Sing; Ban Na Lak; Ban Gok Tum)
Syntarucus plinius ; Katsuyama et al.,2005 : 66, fig.75,♂. (Umphang: Tha Sai; Umphang)
Syntarucus plinius ; Katsuyama et al.,2006 : 47, fig.59,♂. (Nan: Mae Charim)
Leptotes plinius ; Ek-Amnuay,[2007] : 572, pl.259, figs.L111,♂,♂(Un),♀,♀(Un). (Kanchanaburi; Bangkok; Wiang Pa Pao)
Leptotes plinius ; Les Day,2011-2022 : Samui Butterflies, figs.♂,♂(Un). (Koh Samui) (accessed: 2021.02.26)
Leptotes plinius ; Ek-Amnuay,2012 : 592, pl.268, figs.L136,♂,♂(Un),♀,♀(Un). (Kanchanaburi; Bangkok; Wiang Pa Pao)
Leptotes plinius ; Kimura et al.,2014 : 178, figs.♂,♂(Un),♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok; Chiang Dao; Doi Suthep; Doi Inthanon; Maethro; Phu Kradung; Phu Khiewo; Wan Nam Khiewo; Bang Phra; Bangkok; Doi Musso; Kaeng Chai; Kuwai Yai; Kanchanaburi)
Leptotes plinius ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Ratchaburi; Bangkok; Chachoengsao) (accessed: 2024.06.07)
Leptotes plinius ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)

[ LAOS ]
Syntarucus plinius ssp. ; Motono & Negishi,1989 : 71, pl.102, figs.A1.♂,A2.♂(Un). (Tha Ngone; Vientiane; Vang Vieng; Phatong)
Syntarucus plinius ; Osada, Uémura & Uehara,1999 : 215, pl.110, figs.♂,♂(Un),♀. (Vang Vieng; Xiang Khouang)
Syntarucus plinius ; Nakamura & Wakahara,2012 : 52.
Leptotes plinius ; Onodera,2022 : 79, pl.209, figs.♂,♂(Un),♀,♀(Un). (Xiengkhouang: Nam Phang; Khammouan: Nahin)

[ CAMBODIA ]
Syntarucus plinius ; Shirôzu & Saigusa,1962 : 66-67, pl.10, figs.77.♀,78.♀(Un). (Puok)
Leptotes plinius ; Onodera,2008 : 61,60,fig. (Mondolkiri: Bousra)
Leptotes plinius ; Onodera,2009 : 36. (Mondolkiri: Bousra)
Leptotes plinius plinius ; Monastyrskii et al.,2011 : 130. (Phnom Samkos W.S.)
Leptotes plinius plinius ; Chartier & Kosterin,2022 : 121. (Kratie; Mondulkiri; Pursat; Siem Reap)

[ VIETNAM ]
Tarucus plinius ; Lemée,1950 : 19. (Backan)
Tarucus plinius ; Metaye,1957 : 90. (no loc.)
Syntarucus plinius ; Vu,2003 : 58. (Phu Quoc)
Syntarucus plinius ; Luong et al.,2004 : 10. (Cuc Phuong)
Syntarucus plinius plinius ; Miyazaki, Saito & Saito,2006d : 56, figs.L-42,♂,♀. (Lam Dong: Dambri; Gung Re; Madagui; Bin Thuan: Dong Tien)
Syntarucus plinius plinius ; Monastyrskii & Devyatkin,2015 : 52. (N / C / S)
Leptotes plinius plinius ; Saito et al.,2017 : 79. (S: Nui Ket)

[ THAILAND ]
Mae Hong Son : 3♂ 2♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Rai : 1♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 14♂ 4♀ (incl. photo).

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

Kanchanaburi : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Phetchaburi : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Yala (Betong) : 1♂ (photo by S.Atdhabhan).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ LAOS ]
Champasak : 4♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is locally very common in montane and secondary forests at low to high elevations (Alt. 50 - 2500m). Both sexes visit flowers and males frequently come to the banks of streams and puddles to suck water.
It was recently found in Beton, Yala. However, this outbreak was most likely caused by the anthropogenic movement of food plants.

Fabricius, J.C.,1793 : Entomologia systematica emedata et aucta. secundum classes, ordines, genera, species, adjectis synonymis, locis, observationibus, descriptionibus.
3(1): [iv] + 488 pp. Copenhagen. C.G.Proft.

Godart, J.B.,[1824] : Encyclopedie Methodique. Histoire naturelle Entomologie, ou histoire naturelle des crustaces, des arachnides et des insectes
Encyclopedie Methodique 9(2):329-828.

Felder, C.,1860 : Lepidopterorum Amboinensium a Dre L. Doleschall annis 1856-1868 collectorum species novae, diagnostibus collustratae.(1)
Sber. Akad. Wiss. Wien 40(11):(447)448-462.

Murray, R.P.,1873 : Description of a new Japanese species of Lycaena, and change of name of L. cassioides, Murray.
Ent. mon. Mag. 10:126.

Schultze, W.,1910 : Contributions to the Lepidopterous fauna of the Philippines
Philippine J. Sci. (D)5:161-180, pl.1.

Rothschild, L.W.,1915 : On the Lepidoptera in the Tring Museum
sent by Mr. A. S. Meek from the Admirality Island, Dampier, and vulcan Islands.
Novit. zool. 22(3):387-402.

Fruhstorfer, H.,1922 : Gattung: Castalius HBN. [cont.] - 17. Gattung: Lycaenesthes MR. in Seitz, Gross-Schmett. Erde 9
889-896 (16.May.1922).

Seki, Y., Takanami, Y. & Otsuka, K.,1991 : Butterflies of Borneo. Vol.2, No.1. Lycaenidae.
Tobishima Corporation.

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.
♂+♀ (mating), Chiang Mai, Thailand.

1999.07.04 - 2025.05.31.