Four new species of Sphaeroderma Stephens (Coleoptera, Chrysomelidae, Galerucinae, Alticini) from Taiwan, with discussion on genus boundaries based on S. flavonotatum Chûjô and S. jungchani sp. nov.

Habitus of Sphaeroderma flavonotata Chûjô and S. jungchani sp. nov. A S. flavonotata Chûjô, male, dorsal view B ditto, ventral view C ditto, lateral view D S. flavonotata Chûjô, female, dorsal view E ditto, ventral view F ditto, lateral view G S. jungchani sp. nov., male, dorsal view H ditto, ventral view I ditto, lateral view.