The Genus Rhynchaenus Clairville, known as a significant pest group with distribution of worldwide. 40 and 11 species were reported in Japan and China, repectively. Members of Rhynchaenus are usually known as flea weevils and leaf-miners on laval stage. While working on Insects founa of Island, we discovered one species, which is a newly added to the Korean founa (Rhynchaenus maculosus Yang & Zhang). This species was newly emerging pest severely Oak in China. The diagnosis, photographs of habitus and diagnostic characters are provided to facilitate identification.

• Jae-Seok Lee(Division of Zoology, Honam National Institute of Biological Resources, Korea) Corresponding author
• Seung Jin Roh(Division of Zoology, Honam National Institute of Biological Resources, Korea)