♂, Chiang Mai, Thailand.		♀, Chiang Mai, Thailand.
♂, Phetchabun, Thailand.		♀, Mae Hong Son, Thailand.

ON : Thyca pyramus Wallace, 1867 OD : Trans. ent. Soc. Lond. (3)4(3):347. TL : N.India. (NHML) Distribution : Nepal, N.India to Myanmar, Thailand, Laos. ● ssp.pyramus ● ssp.shinkaii ● ssp.perakana

♀, Type (red), India. (NHML, examined)

[ THAILAND ]
Delias thysbe ; Godfrey,1916 : 114. (by literatur Bingham, Fau.Br.Ind.Butts.2:148.)
Delias thysbe pyramus ; Godfrey,1930 : 223. (Prae: Me Song forest; N: Khun Than)
Delias acalis pyramus ; Pinratana,1983 : 8, pl.6, figs.9a♂,♂(Un),♀. (Chiang Mai)
Delias acalis acalis ; Yagishita et al.,1993 : 247, pl.118, figs.1,♂,2,♂(Un),3,♀,4,♀(Un). (N: Chiang Mai; Phae [Phrae])
Delias acalis pyramus ; Ek-Amnuay,[2007] : 132, pl.38, figs.Pi9a♂,♂(Un),♀,♀(Un). (Wiang Pa Pao; Doi Pha Hom Pok)
Delias acalis acalis ; Ek-Amnuay,[2007] : 132, pl.38, figs.Pi9b♂,♀. (Doi Phu Kha)
Delias acalis pyramus ; Kimura et al.,2011 : 168, figs.♂,♂(Un),♀,♀(Un). (Chiang Dao; Doi Suthep; Maethro; Khun Lao Village)
Delias acalis pyramus ; Ek-Amnuay,2012 : 132, pl.38, figs.Pi9a♂,♂(Un),♀,♀(Un),♂,♀. (Wiang Pa Pao; Doi Pha Hom Pok; Doi Phu Kha)
Delias acalis pyramus ; S.Sophonviwatkul, C.Sunthornwiphat & T.Laola,2015- : Butterflies of Thailand, figs. (Chiang Mai; Kamphaeng Phet; Phetchabun) (accessed: 2024.04.13)

[ LAOS ]
Delias thysbe f. pyramus ; Dubois & Vitalis,1921 : 18. (Laos)
Delias acalis pyramus ; Motono & Negishi,1989 : 48, pl.16, figs.1♂,2♂(Un). (Nam Moh)
Delias acalis acalis ; Yagishita et al.,1993 : 247. (Laos)
Delias acalis pyramus ; Masui & Uehara,1994 : 8, pl.2, fig.7,♀(Up & Un). (Xiang Khouang)
Delias acalis acalis ; Osada, Uémura & Uehara,1999 : 202, pl.30, figs.♂,♂,♂(Un),♀. (Nong Het; Phong Saly; Xiang Khouang)
Delias acalis pyramus ; Nakamura & Wakahara,2012 : 42.
Delias acalis pyramus ; Onodera,2022 : 13, pl.59, figs.♂,♂(Un),♀,♀(Un). (Oudomxai; Xiengkhouang: Nakhol)

[ THAILAND ]
Mae Hong Son : 2♂ 1♀.

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Dec

Chiang Mai : 10♂ 4♀ (incl. photo).

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Lampang : 3♂ (photo).

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Nan : 5♂ 2♀.

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Phetchabun : 2♂.

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Chaiyaphum : 1♂.

Jan

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Tak : 1♀.

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The butterfly is not rare in montane forests at low to high elevations (Alt. 450 - 1800m). Both sexes visit flowers and males occasionally come to the banks of streams and puddles to suck water.

Wallace, A.R.,1867 : On the Pieridae of the Indian and Australian Regions.
Trans. ent. Soc. Lond. (3)4(3):301-416, pls.6-9.

♂, Chiang Mai, Thailand.	♀, Chiang Mai, Thailand.
♂, Phetchabun, Thailand.	♀, Chiang Mai, Thailand.
♂, Chiang Mai, Thailand.	♂+♀ (mating), Chiang Mai, Thailand.

2009.10.31 - 2024.04.30.