On the study of phyline plant bug, four species of the genus Psallus Fieber have been observed as new record to Korea. According to the Korean Catalog (Yong Jung Kwon, Sang Jae Suh and Jung Ae Kim, 2001) nineteen species are recorded from the Korean peninsula. Our recent investigation discovered four additional species, Psallus cinnabarinus Kerzhner 1979, P. flavescens Kerzhner 1988, P. stackerlbergi Kerzhner 1988 and P. loginovae Kerzhner 1988. All the four species are described with genital illustration, biology and host information.

• Ram Keshari Duwal(Program in Entomology, Department of Agricultural Biotechnology, Seoul NationalUniversity)
• Seunghwan Lee(Program in Entomology, Department of Agricultural Biotechnology, Seoul NationalUniversity)