Zerene
Zerene is a genus of butterflies in the family Pieridae commonly called dogfaces. The closest living relative is the genus Colias. They are migratory.Species[http://www.[funet.fi/pub/sci/bio/life/insecta/lepidoptera/ditrysia/papilionoidea/pieridae/coliadinae/zerene/index.html ''Zerene''], funet.fi]
