♂, Trat, Thailand.		♂, Chanthaburi, Thailand.

ON : Lotongus zeus optima Fruhstorfer,1911 OD : Deut. ent. Zeit. [Iris] 25:18. TL : Khasia Hills, Assam. (♂, NHML) Distribution : Assam to Myanmar, Thailand, Vietman, Langkawi.

[ THAILAND ]
Zela zeus optimus ; Godfrey,1930 : 378. (Chonburi: Hup Bon)
Zela zeus optimus ; Evans,1949 : 323. (Siam)
Zela zeus optima ; Pinratana,1985 : 85, pl.28, fig.184,♂. (Nakhon Nayok; Chanthaburi)
Zela zeus optima ; Kirton & Eliot,2004 : 326, 364, pl.2, fig.7,♂(Un, Hoop Bon). (Thailand)
Zela zeus optima ; Ek-Amnuay,[2007] : 806, pl.370, figs.H215,♂,♂(Un). (Nakhon Nayok)
Zela zeus optima ; Les Day,2011-2022 : Butterflies of Koh Samui, figs. (Koh Samui) (accessed: 2022.02.23)
Zela zeus optima ; Kimura et al.,2011 : 83, figs.♂,♂(Un). (Kao Soi Dao; Kratching WF)
Zela zeus optima ; Ek-Amnuay,2012 : 866, pl.399, figs.H213,♂,♂(Un). (Nakhon Nayok)
Zela zeus optima ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chanthaburi; Trat) (accessed: 2022.02.23)
Zela zeus optima ; Küppers & Janikorn,2017 : 112, figs.Abb.H-205-206. (Phang Nga)

[ VIETNAM ]
Zela zeus optima ; Kishi et al.,2021 : 52, figs.9,♂,9v♂(Un). (Khanh Hoa: Ba Ho, Nha Trang)

[ THAILAND ]
Chanthaburi : 3♂ (incl.photo by S.Sophonviwatkul).

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Trat (Koh Kut dist.) : 1♂.

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The butterfly is uncommon in montane primeval forest at low elevations (Alt.30m - 350m).

Fruhstorfer, H.,1911 : Neue Hesperiden des Indo-Malayischen Faunengebietes und Besprechung verwandter Formen.
Deut. ent. Zeit. [Iris] 25(2-6):9-79, pl.1.

Kirton, L.G. & J.N. Eliot,2004 : A Revision of the Rattan-Feeding Skipper Genus, Zela de Nicéville (Lepidoptera: Hesperiidae)
Malay. nat. J. 56(4):317-367.

♂, Chanthaburi, Thailand. (photo by S.Sophonviwatkul)

1999.09.11 - 2022.02.28.