A new species of the genus Ambrostoma Motschulsky (Coleoptera, Chrysomelidae, Chrysomelinae) from South Korea, with larval descriptions and biological notes

Ambrostoma koreana sp. n. is described from South Korea. Detailed descriptions and illustrations of adult and all larval instars are provided and differences to closely related species are discussed. Ovoviviparity is reported for the first time in the genus Ambrostoma. Notes on distribution, host plant and biology are also provided.