♂, Mae Hong Son, Thailand.		♂, Chiang Mai, Thailand.
♂, Ranong, Thailand.

ON : Papilio pygmaeus Fabricius, 1775 OD : Syst. Ent.: 536. TL : "India" [S.India]. Distribution : S.India, Nepal, Assam to Myanmar, Thailand, Laos, Vietnam, Langkawi, W.Malaysia (Kedah).

Thanaos indistincta Moore,1878; Proc. zool. Soc. Lond. 1878(3): 694; TL: "Salween, Moulmain" [Mawlamyine, Mon State, Myanmar]. (NHML)

[ THAILAND ]
Aeromachus pygmaeus pygmaeus: Godfrey,1930 : 368. (Satun: Tung Wa)
Aeromachus pygmaeus pygmaeus: Godfrey,1932a : 275. (P)
Aeromachus pygmaeus: Evans,1949 : 245. (Siam)
Aeromachus pygmaeus: Pinratana,1985 : 48, pl.17, fig.86,♂. (Ranong)
'Aeromachus pygmaeus: Ek-Amnuay,[2007] : 772, pl.355, fig.H103,♂(Un) [Laos, image from Osada et al.1999].'
Aeromachus pygmaeus: Kimura et al.,2011 : 51, figs.♂,♂(Un). (Khlong Naka)
'Aeromachus pygmaeus: Ek-Amnuay,2012 : 822, pl.380, fig.H100,♂(Un) [Laos, image from Osada et al.1999].'
Aeromachus pygmaeus: Küppers & Janikorn,2017 : 84, figs.Abb.H-093-096. (Phang Nga)
Aeromachus dubius impha: Nishimura,2025 : 24, fig.37,♂,37v♂(Un). (Mae Hong Son: Nai Soi)

[ LAOS ]
Aeromachus pygmaeus: Masui & Uehara,1996 : 5, pl.2, fig.20,♂,♂(Un). (Xiang Khouang)
Aeromachus pygmaeus: Osada et al.,1999 : 223, pl.137, fig.♂(Un). (Xiang Khouang)
Aeromachus pygmaeus: Nakamura & Wakahara,2012 : 58.

[ VIETNAM ]
Aeromachus pygmaeus: Inoué & Kawazoé,1966 ; 90-91, textfig.23(♂genitalia), figs.81,♂,82,♂(Un). (Dalat)
Aeromachus pygmaeus: Luong et al.,2004 : 14, 87, figs.♂,♂(Un). (Cuc Phuong)
Aeromachus pygmaeus: Monastyrskii & Devyatkin,2015 : 76. (C: Lam Dong)

[ THAILAND ]
Mae Hong Son : 2♂.

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Chiang Mai : 1♂.

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Ranong : 1♂ (photo by A.Giudici).

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The butterfly is uncommon in forests at low to moderate elevations (30 - 600 m a.s.l.) and is often found at forest edges and grasslands. Both sexes visit flowers. Males are occasionally observed mud-puddling along stream banks and at puddles. Further distributional research is needed.

Fabricius, J.C.,1775 : Systema Entomologiae, sistens Insectorum classes, ordines, genera, species, adjectis synonymis, locis, descriptionibus, observationibus.
Flensbvrgi et Lipsiae, Libraria Kortii 8vo : [i-xxx] + 832 pp.

Moore, F.,1878 : Descriptions of new Asiatic Hesperidae.
Proc. zool. Soc. Lond. 1878(3): 686-695, pl.45.

Evans, W.H.,1949 : A catalogue of the Hesperiidae from Europe, Asia and Australia in the British Museum (Natural History).
i-xix + 1-502, pls.1-35. London.

♂, Ranong, Thailand. (photo by A.Giudici)

1999.09.04 - 2025.12.31.