Butterflies of Sri Lanka | 台北市立動物園資訊網

Sri Lanka is home to 245 species of butterflies with 23 of these being endemic to the island.[1] Of the 245 species, 76, are listed as threatened nationally, while the Ceylon rose is designated as critically endangered.[2]

The majority of species are found in the foothills (up to 3,000 feet (910 m) elevation). A much smaller number of species are found above 4,000 feet (1,200 m), while 20 species of butterfly are restricted to the low lying dry zone (below 500 feet (150 m) elevation). The number of butterflies peaks in two seasons during the year. The first of these is during the southwestern monsoon in the months of March to April. The second is during the northeastern monsoon which continues from September to October.