♂, Chaiyaphum, Thailand.		♀, Chiang Mai, Thailand. (photo by RIEB)
♂, Da Nang, Vietnam. (photo by K.Saito)		♀, Dak Lak, Vietnam. (photo by K.Saito)
♂, Chiang Mai, Thailand.		♂ genitalia, Nghe An, Vietnam. (photo by K.Saito)

ON : Arrhenothrix penicilligera Nicéville, 1890 OD : Butts. India Burmah Ceylon 3:337, pl.28, fig.214,♂. TL : Khasi Hills. (♂, NZC) Distribution : Bhutan, Assam, Bangladesh, Myanmar, Thailand, Laos, Vietnam, S.Yunnan, S.Guangxi, [Hainan].

Type 1♂, Sylhet. (NZC) ; Sheela et al.,2019 : 107, figs.♂,♂(Un).

[ THAILAND ]
Dacalana vidura ; Godfrey,1916 : 140. (Prae: Me Song forest) (in part)
Dacalana penicilligera ; Godfrey,1930 : 341-342. (Prae: Me Song forest)
'Dacalana burmana ; Pinratana,1981 : 126. not fig. (Chiang Mai)'
Dacalana penicilligera ; Pinratana,1981 : 126, pl.23, fig.4,♂(Un) ; pl.32, figs.7,♂,8,♂(Un). (Chiang Mai; 'Nakhon Nayok') (in part)
Dacalana penicilligera ; Kimura et al.,2014 : 111, figs.♂(Doi Suthep),♂(Doi Suthep,Un),♀(Doi Suthep),♀(Doi Suthep,Un). (Doi Suthep) (in part)
Dacalana penicilligera ; Saito & Inayoshi,2022 : 40-41, figs.4,♀,♀(Un). (Chiang Mai; Chaiyaphum)

[ LAOS ]
Dacalana penicilligera penicilligera ; Osada, Uémura & Uehara,1999 : 218, pl.124, fig.♂. (Lak Sao)
Dacalana penicilligera ; Nakamura & Wakahara,2012 : 55.
Dacalana penicilligera ; Saito & Inayoshi,2022 : 40-41. (Lak Sao)
'Dacalana penicilligera ; Onodera,2022 : 93, pl.225, figs.♀,♀(Un). (Bolihamxai: Thabok)'

[ VIETNAM ]
Dacalana penicilligera ; Monastyrskii et al.,2006 : 44. (Thua Thien Hue: Nam Dong; A Luoi; Huong Thuy)
Dacalana penicilligera ; Monastyrskii & Devyatkin,2015 : 65. (C / S: Tay Ninh)
Dacalana penicilligera ; Saito & Inayoshi,2022 : 40-41, figs.5,♂,♂(Un),6,♀,♀(Un),7,♂,♂(Un),8,♂,♂(Un),54(♂,genitalia),72a(♂,Fore-tarsus),73a,73b(♂,FW-venation),74a(Map). (Lam Dong; Dak Lak; Kon Tum; Nghe An; Da Nang)

[ THAILAND ]
Chiang Mai : 3♂ 1♀.

Jan

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Dec

Chaiyaphum : 2♂.

Jan

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Mar

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Dec

[ VIETNAM ]
Dak Lak : 1♂ 3♀.

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Dec

Kon Tum : 1♂.

Jan

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Nghe An : 2♂.

Jan

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Da Nang : 2♂.

Jan

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Dak Nong : 2♂.

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Lam Dong : 13♂.

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The butterfly is locally uncommon in montane forests at moderate elevations (Alt. 800 - 1450m) and often rest on the underside of leaves.
Pinratana,1981 recorded this species from 'Nakhon Nayok' but we could not confirm the specimen. Further distributional research is needed.

Nicéville, L.de.,1890 : The butterflies of India, Burmah and Ceylon. A descriptive handbook of all the known species of rhopalocerous Lepidoptera inhabiting that region, with notices of allied species occurring in the neighbouring countries along the border, with numerous illustrations. Volume III (Lycaenidae).
Calcutta Central Press 4 to : xii + 503 pp, frontispiece, pls.25-29.

Corbet, A.S.,1938 : A revision of the Malayan species of Pratapa Moore (Lepidoptera-Lycaenidae)
Proc. R. ent. Soc. Lonc. (B)7(8)166-172.

Saito, K. & Inayoshi, Y.,2022 : A revision of the vidura group of the genus Dacalana Moore, 1884
Butterflies 88:39-63.

Huang, H.,2022 : Taxonomy and morphology of Chinese butterflies 2
Lycaenidae: Theclinae: Iolaini: Genera Tajuria Moore, 1881, Pratapa Moore, 1881, Dacalana Moore, 1884, Maneca de Nicéville,1890, Creon de Nicéville, 1896 and Bullis de Nicéville, 1897 (Lepidoptera: Lycaenidae)
Atalanta 53(1/2):136-199.

♂, Chiang Mai, Thailand.

1999.07.18 - 2023.08.31.