♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Nan, Thailand.		♂, Chaiyaphum, Thailand.

ON : Dercas doubledayi Moore, 1905 OD : Lep. Ind. 7(74):31-32, pl.562, figs.1, 1a-e. TL : 'Sikkim; Bhotan [Bhutan]; Assam; Cherra Pungi; Khasias; Manipur; Burma [Myanmar]; Upper Tenasserim [Tanintharyi Region, Myanmar]'. Distribution : Nepal, Sikkim to N.Myanmar, Yunnan, Thailand, Laos, Cambodia, Vietnam. ● ssp.doubledayi ● ssp.verhuelli ● ssp.parva

Dercas verhuelli menandrus Fruhstorfer, 1910 : in Seitz, Grossschmett. Erde 9: 160-161, pl.67d. TL. 'Sikkim; Bhutan'.
Dercas verhuelli pallidus Fruhstorfer, 1910 : in Seitz, Grossschmett. Erde 9: 161, pl.67d. TL. 'Assam; Manipur, [India]; Tenasserim [Tanintharyi, Myanmar]'.
Dercas verhuelli naganum Tytler, 1939 : J. Bombay nat. Hist. Soc. 41(2): 242. TL. 'Nag Hills [Nagaland]; Manipur, [NE.India]'.
Dercas verhuelli shania Tytler, 1939 : J. Bombay nat. Hist. Soc. 41(2): 242. TL. 'Maymyo, N.Shan States [Maymyo, Mandalay Region, Myanmar]; Loimwe, S.Shan States [Loi Mwe, Shan Stete, Myanmar]'.

[ THAILAND ]
Dercas verhuelli ; Godfrey,1916 : 115. (by literatur Bingham, Fau.Br.Ind.Butts. 2:226.)
Dercas verhuelli doubledayi ; Godfrey,1930 : 228. ('Prae: Me Song forest')
Dercas verhuelli doubledayi ; Pinratana,1983 : 24, pl.19, figs.42a♂,♀. (Chiang Mai; Loei; Chaiyaphum; Sakon Nakhon)
Dercas verhuelli doubledayi ; Ek-Amnuay,[2007] : 164, pl.54, figs.Pi45a♂,♂,♀,♀. (Chiang Mai: Doi Pui; Chaiyaphum: Phu Khieo)
Dercas verhuelli doubledayi ; Kimura et al.,2011 : 149, figs.♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok; Thung Saleng Luang; Doi Phui; Doi Suthep; Phu Khiewo)
Dercas verhuelli doubledayi ; Ek-Amnuay,2012 : 164, pl.54, figs.Pi45a♂(right),♀,♀. (Doi Pui; Phu Khieo) (in part)
Dercas verhuelli doubledayi ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Nan; Phetchabun) (accessed: 2022.10.15)

[ LAOS ]
Dercas verhuelli f. doubledayi ; Dubois & Vitalis,1921 : 21. (Laos)
Dercas verhuelli doubledayi ; Motono & Negishi,1989 : 51, pl.21, fig.8,♀[♂]. (Nam Moh)
Dercas verhuelli doubledayi ; Osada, Uémura & Uehara,1999 : 202, pl.39, figs.♂,♂(Un). (Vang Vieng)
Dercas verhuelli doubledayi ; Nakamura & Wakahara,2012 : 43.
Dercas verhuelli doubledayi ; Onodera,2022 : 18, pl.69, figs.♂,♂(Un),♀,♀(Un). (Xiengkhouang: Phou Samsoum; Bolikhamxai: Lak Sao)

[ CAMBODIA ]
Dercas verhuelii ; Onodera,2008 : 57,59, figs.♂,♂(Un). (Mondolkiri: Bousra)
Dercas verhuelli doubledayi ; Chartier & Kosterin,2022 : 114. (Mondulkiri)

[ VIETNAM ]
Dercas skertehlyi ; Vitalis,1919 : 219. (Tonkin)
Dercas rufolineata ; Vitalis,1919 : 219. (Tonkin)
Dercas verhuelli f.♂ verhuelli ; Dubois & Vitalis,1921 : 21. (Tonkin)
Dercas verhuelli f.♀ rufolineata ; Dubois & Vitalis,1921 : 21. (Tonkin)
Dercas verhuelli f. doubledayi ; Dubois & Vitalis,1921 : 21. (Annam)
Dercas verhuelli ; Lemée,1950 : 5. (Hagiang; Backan; Langson)
Dercas verhuelli verhuelli f. verhuelli ; Metaye,1957 : 86. (N)
Dercas verhuelli verhuelli f.♀. rufolineata ; Metaye,1957 : 86. (N)
Dercas verhuelli doubledayi ; Metaye,1957 : 86. (C)
Dercas verhuelli doubledayi ; Ikeda et al.,1998 : 19, figs.6:1,♂,10:25(♂genitalia). (Cuc Phuong)
Dercas verhuelli ; Luong et al.,2004 : 2, 34, figs.♂[♀],♂[♀](Un). (Cuc Phuong)
Dercas verhuelli ; Monastyrskii et al.,2006 : 39. (Thua Thien Hue: Nam Dong; A Luoi; Huong Thuy; Bach Ma)
Dercas verhuelli doubledayi ; Miyazaki, Saito & Saito,2006 : 14, figs.Pi-25,♂,♀. (Lam Dong: Dambri; Gung Re)
Dercas verhuelli doubledayi ; Monastyrskii & Devyatkin,2015 : 17. (N / C: to Lam Dong)
Dercas verhuelli doubledayi ; Monastyrskii,2024 : 106-108, pl.28, figs.1a♂,1b♂(Un),1c♀,1d♀(Un). (N: Cuc Phuong; Cat Ba / C: Pu Mat; Vu Quang; Phong Nha-Ke Bang; Dak Rong; Bach Ma; Sao La; Ngoc Linh; Kon Plong; Kon Chu Rang; Kon Ka Kinh; Loc Bac; Hon Ba; Bidoup-Nui Ba; Bao Lam; Chu Yang Sin; Cat Loc / S: Da Teh; Cat Tien)

[ THAILAND ]
Chiang Mai : 22♂ 6♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lampang : 1♂ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nan : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Tak : 1♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chaiyaphum : 2♂.

Jan

Feb

Mar

Apr

May

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Nov

Dec

The butterfly is locally common in montane forests at moderate to high elevations (Alt. 900 - 1600m). Both sexes visit flowers and often rest on the underside of leaves. Males form flight paths along streams or forest edges and frequently come to the banks of streams and puddles to suck water.
In general, naganum and shania are treated as synonyms of the nominotypical subspecies, but in view of their distribution, they are treated here as synonyms of doubledayi. Further taxonomic study is needed.

Moore, F.,1905-1907 : Lepidoptera Indica. Vol.7.
Rhopalocera. Family Papilionidae. (Sub-Family Pierinae (continued). Family Lycaenidae. Sub-Families Gerydinae, Lycaenopsinae and Everinae).
L.Reeve & Co., London.

Fruhstorfer, H.,1910 : 2. Familie: Pieridae in Seitz, Gross-Schmett. Erde 9
153-168. (2.Apr.1910)

Tytler, H.,1939 : Notes on some new and interesting butterflies chiefly from Burma. pt.1.
J. Bombay nat. Hist. Soc. 41(2): 235-252.

♂, Chiang Mai, Thailand.	♂ with Catopsilia pomona, Chiang Mai, Thailand.
♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂, Chiang Mai, Thailand.

1996.10.31 - 2025.04.30.