“Butterfly Fauna of Taiwan Volume.2: Pieridae” contains an introduction to each species that includes their Chinese names and synonyms, specimen inspection, adult morphology, global distribution, distribution in Taiwan, larval host plants, biology and remarks. Each species of butterfly is depicted in color photos of the backs, the abdomens, and dissected genitalia of both female and male. The “Butterfly Fauna of Taiwan” study was the first time a complete series of monographs regarding the island, and the associated butterfly resources have been collected and reviewed with the latest data on their current status written in both Chinese and English for five volumes in total.