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.

Diagnostic characters of Sphaeroderma sheipaensis sp. nov. and S. jungchani Lee, sp. nov. A antenna, male, S. jungchani sp. nov. B antenna, female, Sphaeroderma sheipaensis sp. nov. C aedeagus, dorsal view, S. jungchani sp. nov. D ditto, lateral view E abdominal ventrite VIII, female, S. sheipaensis sp. nov. F spermatheca, S. sheipaensis sp. nov. G gonocoxae, S. sheipaensis sp. nov.