♂, Ranong, Thailand.		♀, Ranong, Thailand.
♂, Ranong, Thailand.		♀, Trang, Thailand.
♂, Chiang Mai, Thailand.		♀, Yala, Thailand.
♂, Phrae, Thailand.		♂, Trat, Thailand.

Type 1♂, Tavoy, Burma. (NZC) Sheela et al.,2019 : 49, fig.♂,♂(Un).

[ THAILAND ]
Pirdana hyela rudolphii ; Godfrey,1916 : 145. (Chonburi: Hup Bon)
Pirdana hyela ; Godfrey,1930 : 378. (Chiang Mai / Prae: Me Song forest / Chonburi: Sriracha)
Pirdana hyela rudolphii ; Evans,1949 : 338. (Siam)
Pirdana hyela rudolphii ; Pinratana,1985 : 94, pl.33, fig.206. (Chiang Mai / Chaiyaphum / Nakhon Ratchasima / Nakhon Nayok / Chanthaburi / Ranong / Trang)
Pirdana hyela major ; Chiba & Tukiyama,1993 : 22, pl.1, figs.1a♂,1b,♂(Un),2a,♂,2b,♂(Un). (Chiang Mai / Ranong)
Pirdana hyela rudolphii ; Ek-Amnuay,[2007] : 820, pl.377, figs.H241,♂[♀],♂[♀](Un),♀(Un). (Chiang Mai)
Pirdana hyela rudolphii ; Les Day,2011- : Butterflies of Koh Samui, fig.♂(Un). (Koh Samui)
Pirdana hyela rudolphii ; Kimura et al.,2011 : 90, figs.♂,♂(Un),♀,♀(Un). (Khun Lao Villege / Wan Nam Khiewo / Kao Soi Dao / Kratching WF / Kam Puan / Khlong Naka / Ka Chong / Than To WF)
Pirdana hyela rudolphii ; Ek-Amnuay,2012 : 880, pl.407, figs.H238,♂[♀],♂[♀](Un),♀(Un). (Chiang Mai)
Pirdana hyela rudolphii ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Saraburi / Trat / Chanthaburi / Sa Kaeo)
Pirdana hyela rudolphii ; Küppers & Janikorn,2017 : 119, fig.Abb.H-224. (Phang Nga)

[ LAOS ]
Pirdana hyela rudolphii ; Masui & Uehara,1997 : 6, 5, figs.24,♂,♂(Un),♀,♀(Un). (Saravan)
Pirdana hyela rudolphii ; Osada, Uemura & Uehara,1999 : 224, pl.141, figs.♂,♀. (Lak Sao / Savannakhet / Thateng)
Pirdana hyela rudolphii ; Nimura & Wakahara,2005 : 49. (Namdhua)
Pirdana hyela rudolphii ; Nakamura & Wakahara,2012 : 59.

[ VIETNAM ]
Pirdana hyela rudolphii ; Inoué & Kawazoé,1970 ; 10-11, figs.151♀,152♀(Un),textfig.48(♂genitalia). (Trang Bom ; Banmethuot)
Pirdana hyela rudolphii ; Devyatkin & Monastyrskii,1999 ; 173. (Bach Ma)
Pirdana hyela rudolphii ; Ikeda et al.,2001b : 66, figs.4:6♂,7♂(Un),5:33(♂genitalia). (Cuc Phuong)
Pirdana hyela rudolphii ; Luong et al.,2004 : 15, 90, figs.♂,♂(Un). (Cuc Phuong)
Pirdana hyela ; Monastyrskii et al.,2006 : 45. (Thua Thien Hue: A Luoi ; Bach Ma)
Pirdana hyela rudolphii ; Miyazaki, Saito & Saito,2007b ; 14, figs.H-95,♂,♀. (Lam Dong: Dambri ; Dai Duc Me)
Pirdana hyela rudolphii ; Monastyrskii & Devyatkin,2015 : 82. (N / C / S)

[ THAILAND ]
Chiang Mai : 1♂.

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Phrae : 2♂.

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Sa Kaeo : 2♂ 1♀ (incl.photo).

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Chanthaburi : 3♂.

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Trat (Koh Chang dist.) : 2♂.

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Phetchaburi : 2♂ (photo by K.Yano & M.Hayashi).

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Ranong : 8♂ 4♀.

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Phang nga : 1♂.

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Nakhon Si Thammarat : 1♂.

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Trang : 1♀.

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Satun : 1♂.

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Yala : 3♂ 1♀ (incl.photo by S.Atdhabhan).

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Narathiwat : 1♂.

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Chiba & Tukiyama,1993 treated a specimen from N.Thailand as ssp.major. They considerd specimen in Peninsular Thailand is also ssp.major and transition form to ssp.rudolphii. But The speccimens in Thailand are very variable and I treated all to as ssp.rudolphii.

Elwes, H.J. & de Nicéville, L.,[1887] :
List of the lepidopterous insects collected in Tavoy and in Siam during 1884 and 1885 by the Indian Museum collector, under C.E.Pitman, Esp.
J. asiat. Soc. Bengal, Pt II 55(5):413-442.

Chiba, H. & Tsukiyama, H.,1993 : A review of the Genus Pirdana Distant (Lepidoptera: Hesperiidae)
Butterflies 6:19-25.

♂, Phetchaburi, Thailand. (photo by K.Yano)	♂, Phetchaburi, Thailand. (photo by M.Hayashi)
♂, Sa Kaeo, Thailand.	♀, Sa Kaeo, Thailand.