ON : Rhodocera lycorias Doubleday, 1842 OD : in Gray, Zool. Misc. (2):77-78. TL : "Silhet" [southern Khasia Hills, India ; north of Sylhet, Bangladesh]. Distribution : Nepal, N.India (Sikkim ; Assam), Bhutan, SE.Tibet, N.Myanmar, Laos, Vietnam, SW.China.

Gonepteryx wallichii Doubleday, 1848 : Trans. ent. Soc. Lond. 1848(5)(Proc.):xlvii. TL. "India Sept." [N.India].
Gonepteryx urania Butler, 1865 : Proc. zool. Soc. Lond. 1865(2):458, pl.26, fig.5. TL. "Northern India".
Dercas decipiens Nicéville, 1898 : Ann. Mag. nat. Hist. (7)2:483. TL. Khasi Hills [Meghalaya, India].
Dercas brindaba Swinhoe, 1899 : Ann. Mag. nat. Hist. (7)3:107. TL. "Khasia Hills", [Khasi Hills, Meghalaya, India].

decipiens ; ♂, Type, Khasi Hills. (NZC) ; Sheela et al.,2019 : 279, figs.♂,♂(Un).

[ LAOS ]
Dercas lycorias f. difformis ; Dubois & Vitalis,1921 : 21. (Laos)
Dercas lycorias f. lycorias ; Dubois & Vitalis,1921 : 21. (Laos)
Dercas lycorias lycorias ; Masui & Uehara,1997 : 6, pl.2, figs.12,♂,♂(Un). (Lak Sao)
Dercas lycorias lycorias ; Osada, Uémura & Uehara,1999 : 203, pl.39, figs.♂,♂. (Xam Neua; Lak Sao)
Dercas lycorias ; Nakamura & Wakahara,2012 : 43.
Dercas lycorias lycorias ; Onodera,2022 : 18, pl.69, figs.♂,♂(Un), text:18. (Bolikhamxai: Lak Sao)

[ VIETNAM ]
Dercas lycorias f. difformis ; Dubois & Vitalis,1921 : 21. (Annam)
Dercas lycorias f. lycorias ; Dubois & Vitalis,1921 : 21. (Tonkin: Chapa)
Dercas lycorias f. decipiens ; Dubois & Vitalis,1921 : 21. (Annam: Muong-Sen)
Dercas difformis ; Lemée,1950 : 5. (Hagiang)
Dercas lycorias difformis ; Metaye,1957 : 86. (C)
Dercas lycorias lycorias ; Metaye,1957 : 86. (N)
Dercas lycorias lycorias f. decipiens ; Metaye,1957 : 86. (C)
Dercas lycorias lycorias ; Monastyrskii & Devyatkin,2015 : 17. (N / C)

[ THAILAND ]
' Siam. 2♂ (NHML, ex.Grose-Smith,1910)'

[ VIETNAM ]
Lao Cai : 2♂ (NHML).
'Cochin China', Laokai [Lao Cai]. 1936.06.--. 1♂ ; 'Cochin China;, Chapa' [Sapa]. 1936.08.--. 1♂.

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Bozano et al. (2016:37) assumed that the nominotypical subspecies described by Doubleday,1842 is the same taxon as in China. However, Yoshino (2023:34) treated lycorias as three subspecies, such as ssp.lycorias, ssp.difformis and ssp.meridionalis. Here I treat this it as the Indian population as in the past. Further taxonomic study is needed.
There are several specimens labelled 'Siam' in the NHML, but no detailed data is available and it is considered to be an erroneous locality.

Doubleday, E.,1842 : Characters of undescribed Lepidoptera.
Zool. Miscell. (J.E.Gray) (2):73-78, 1 cut.

Doubleday, E.,1848 : Gonepteryx wallichii.
Trans. ent. Soc. Lond. 1848(5)(Proc.):xlvii.

Butler, A.G.,1865 : Description of six new Species of exotic Butterflies in the Collection of the British Museum.
Proc. zool. Soc. Lond. 1865(2):455-459, pl.26.

Nicéville, L. de,1898 : A Revision of the Pierine Butterflies of the Genus Dercas.
Ann. Mag. nat. Hist. (7)2:478-484.

Swinhoe, C.,1899 : New Species of Orientali Lepidoptera.
Ann. Mag. nat. Hist. (7)3:102-116.

Bozano, G.C., Coutsis, J., Herman, P., Allegrucci, G., Gesaroni, D. & Sbordoni, V.,2016 :
Guide to the Butterflies of the Palearctic Region. Pieridae part 3. Subfamily Coliadinae, Dismorphinae
70 pp., Omnes Artes, Milano.

Yoshino, K.,2023 : Review of the taxonomic classifications of Chinese butterflies (1) (Papilionidae, Pieridae, Nymphalidae and Hesperiidae, Lepidoptera)
Neo Lepidoptera 5:32-45.

1996.10.31 - 2023.12.31.