Grapevines are cultivated globally, and are also damaged by a large number of insect pests especially including leafhoppers. Leafhoppers are one of the important insect pests on various crops including grape. Among them, the genus Arboridia Zachvatkin (Hemiptera: Auchenorrhyncha: Cicadellidae: Typhlocybinae) was known as insect pests against grape farming. Eighty species were described in the genus in the world, and eight species were recorded in the Korean Peninsula so far, which are: Arboridia apicalis, A. kakogawana, A. koreacola, A. maculifrons, A. nigrigena, A. okamotonis, A. silvarum, A. suzukii. Among them, A. apicalis, A. kakogawana, A. maculifrons, A. nigrigena, A. suzukii have been known as important insect pests on grapes. In this talk, we propose a new species from the Korean Peninsula, and confirmed two new records: A. agrillacea and A. lunula. Additionally we present differential diagnoses of the Arboridia species damaging on grapevines for the field of applied biology.