Four Potanthus species are recognized here from a collection made since 1984 in Taiwan. They are P. confucius angustatus (Matsumura), P. motzui sp. nov., P. juno wilemanni Evans and P. pava pava (Fruhstorfer) respectively, in which P. motzui is a new species. The first description of the fem ale of P. juno wilemanni and the first observation on early stages of P. pava pava are also reported.
- new species