Other well-known pests are pieris brassicae, Virachola isocrates and Papilio demoleus.
Among these was a new species, which I have named pieris tamar.
You ask what I think about the gay-coloured females of pieris.
The man who was the first to see his cabbage-plot devastated by caterpillars made the acquaintance of the pieris.
The pieris cratgi fixes itself at sunset on flowers, where it is easily taken by the hand.
The pieris, on its part, takes good care not to touch the tithymals: they would endanger its life.
The species of Terias, one or two pieris, and the genus Callidryas do not exhibit any perceptible change of form.
Many caterpillars of pieris rapæ have, during this autumn, fed below my windows.
Some of the genera are very widely distributed in temperate regions, especially the genera pieris and Colias.
Similar results have been obtained with the seasonally dimorphic pieris napi.