ON : Pieris cynis Hewitson, 1866 OD : Ill. exot. Butts. 3(59): [9], pl.[5], fig.54. TL : Sumatra. Distribution : P.Thailand (Phang Nga and Southward), W.Malaysia, Sumatra.

[ THAILAND ]
Udaina [sic] cynis cynis ; Godfrey,1930 : 232. (P: Bangnara)
Phrissura aegis cynis ; Pinratana,1983 : 15, pl.16, fig.25,♂. (Narathiwat)
Udaiana cynis cynis ; Ek-Amnuay,[2007] : 146, pl.45, figs.Pi27,♂,♂(Un),♀,♀(Un). ('Than To')
Udaiana cynis cynis ; Kimura et al.,2011 : 154. (by literature)
Udaiana cynis cynis ; Ek-Amnuay,2012 : 146, pl.45, figs.Pi27,♂,♀,♀(Un). ('Than To')
Phrissura aegis cynis ; Küppers & Janikorn,2017 : 193-194, fig.Abb.Pi-045. (Phang Nga)

This is a very localized species and rare in Thailand. The butterfly is found in montane forests at low elevations.

Hewitson, W.C.,1852-1877 : Illustrations of new species of exotic Butterflies, selected chiefly from the Collections of W.Wilson Saunders and William C. Hewitson.
5 vols. John Van Voorst, London.

1996.10.31 - 2022.10.31.