Ithomia salapia. Butterflies in the genus Ithomia are migratory, and occur in rainforest and cloudforest at elevations between sea level and about 2000m. They spend much of the time deep in the forest, but emerge in early morning or in overcast weather to visit flowers along roadsides and riverbanks.
The Common Emigrant or Lemon Emigrant (Catopsilia pomona) is a medium sized pierid butterfly found in Asia and parts of Australia. The species gets its name from its habit of migration. Some early authors considered them as two distinct species Catopsilia crocale and Catopsilia pomona