Blue mormon is a common butterfly flying throughout the country in all
elevations. It is one of the largest butterflies in the island which second only to
the female Bird wing (Troides helena). Male
often settles on damp earth and river beds to absorb minerals. Larva feeds on
varies plants of family Rutaceae (Atalantia ceylanica [වල් දෙහි/යකිනාරන්/යක් දෙහි], Atalantia monophylla, Atalantia rotundifolia, Citrus aurantiifolia [දෙහි], Citrus maxima, Citrus reticulata ,Citrus sinensis and Paramignya monophylla)
