♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.		♀, Tak, Thailand.

ON : Pieris descombesi Boisduval, 1836 OD : Spec. gen. Lepid. 1:465-466. TL : "Cochin China" [S.Vietnam]. Distribution : Myanmar, Thailand, Laos, Cambodia, Vietnam, Yunnan. ● ssp.descombesi ● transition zone of descombesi and eranthos ● ssp.eranthos

[ THAILAND ]
Delias descombesi leucacantha ; Fruhstorfer,1910 : 131. (Bangkok)
Delias descombesi leucacantha ; Godfrey,1916 : 113.
Delias descombesi leucacantha ; Godfrey,1930 : 222. (Prae: Me Song forest; Muak Lek; Chonburi: Sriracha; Bangkok)
Delias descombesi descombesi ; Pinratana,1983 : 8, pl.7, figs.11a♂,♀,♀(Un). (Chiang Mai; Chaiyaphum; Mae Hong Son; Bangkok; Chonburi; Nonthaburi; Nakhon Nayok; Nakhon Ratchasima; Phetchabun; Saraburi; Rayong; Uthai Thani;) (in part)
Delias descombesi descombesi ; Ek-Amnuay,[2007] : 134, pl.39, figs.Pi11a♂,♂(Un),♀,♀(Un). (Doi Pha Hom Pok)
Delias descombesi descombesi ; Kimura et al.,2011 : 168, figs.♂,♂(Un),♀,♀(Un). (Chiang Dao; Thoeu; Phu Kradung; Wan Nam Khiewo; Kao Yai; Bang Phra; Erawan WF.)
Delias descombesi descombesi ; Ek-Amnuay,2012 : 134, pl.39, figs.Pi11a♂,♂(Un),♀. (Doi Pha Hom Pok)
Delias descombesi descombesi ; Okamoto et al.,2013 : 6. (Kanchanaburi: Mae Klong Station)
Delias descombesi descombesi ; Chaianunporn & Chaianunporn,2019 : 87. (Chaiyaphum: Chulabhorn Dam)
Delias descombesi descombesi ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2023- : Butterflies of Thailand, figs., Early Stages. (Chiang Mai; Kanchanaburi; Saraburi; Bangkok; Chonburi) (accessed: 2024.04.13)

[ LAOS ]
Delias descombesi f. descombesi ; Dubois & Vitalis,1921 : 17. (Luang-Prabang)
Delias descombesi f. eranthos ; Dubois & Vitalis,1921 : 17. (Luang-Prabang)
Delias descombesi descombesi ; Masui & Uehara,1995 : 5, pl.2, fig.1,♀(Up & Un). (Saravan)
Delias descombesi descombesi ; Osada, Uémura & Uehara,1999 : 202, pl.28, figs.♂,♀(Un),♀. (Xiang Khouang; Saravan; Thakhek)
Delias descombesi descombesi ; Nakamura & Wakahara,2012 : 42.

[ CAMBODIA ]
Delias descombesi descombesi ; Monastyrskii et al.,2011 : 128. (Phnom Samkos W.S.)
Delias descombesi descombesi ; Kosterin,2019b : 26. (Mondulkiri)
Delias descombesi descombesi ; Chartier & Kosterin,2022 : 114. (Mondulkiri; Preah Sihanouk; Pursat)

[ VIETNAM ]
Delias descombesi leucacantha ; Fruhstorfer,1910 : 131. (Saigon)
Delias descombesi leucacantha ; Godfrey,1919 : 464. (S: Sui Kat)
Delias descombesi f. descombesi ; Dubois & Vitalis,1921 : 17. (Cochinchine)
Delias descombesi descombesi ; Metaye,1957 : 85. (S)
Delias descombesi descombesi ; Miyazaki, Saito & Saito,2006 : 11, figs.Pi-3,♂,♀. (Lam Dong: Dambri; Dai Duc Me)
Delias descombesi descombesi ; Monastyrskii & Devyatkin,2015 : 15. (C: Lam Dong ; Khanh Hoa / S)
Delias descombesi descombesi ; Saito et al.,2017 : 78. (S: Nui Cam; Nui Coto)

[ THAILAND ]
Mae Hong Son : 3♂.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Chiang Mai : 9♂ 3♀ (incl. photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Lampang : 1♂ 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

Loei : 2♂ (photo).

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

Phetchabun : 1♀ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Nakhon Nayok : 1♀ (photo).

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

[ VIETNAM ]
Lam Dong : 5♂ 2♀.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The butterfly is common in montane and secondary forests at low to high elevations (Alt. 300 - 1700m). Males form flight paths and are frequently found at hilltops. Both sexes visit flowers and I have never seen males come to the streams to suck water.
Although only a few specimens have been examined, the individuals from Phetchaburi and Prachuap Khiri Khan in the northern part of peninsular Thailand seem to be an intermediate population between the nominotypical subspecies and ssp.eranthos. Further taxonomic study and distributional research are needed.

Boisduval, J.B.A.,1836 : In Roret's "Suite a Buffon", Histoire naturelle des Insectes. Species general de Lepidopteres. 1.
Paris, Libr. Encycl. de Roret 8vo:[4]+xii+690+6pp, 24 pls.

♂, Chiang Mai, Thailand.	♀, Phetchabun, Thailand.
♂+♀ (mating), Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♀, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♀ (laying eggs), Chiang Mai, Thailand.	Eggs, Chiang Mai, Thailand.
Pupae, Chiang Mai, Thailand.

1996.10.31 - 2024.04.30.