Apolygus xanthomelas Yasunaga and Yasunaga 2000 is reported from Korea for the first time. It is larger than other congeneric species from Korea and has characteristic V-shaped pale parts on hemelytra surrounded by entirely black clavus and posterior triangular marks of corium.
It is similar in overall appearance to the Chinese congeneric species, A. ornatus (Zheng and Wang 1983), but it can be distinguished by the vesica, which has a long needle-shaped spicule reaching the apex of median sclerite and ventral sclerite, a slender and weak wing-shaped sclerite and a small sublateral sclerite. This species also distributes in Japan, but the Japanese population is a little different from that of Korea in usually having a pair of dark spots on calli.
In this study, the detailed information is given with some photos of the male and female genitalia.

• Jongwoon Seong(Applied Entomology Div., Dept. of Agricultural Biology, National Institute of Agricultural Science and Technology, Rural Development Administration)
• Gwan-Seok Lee(Applied Entomology Div., Dept. of Agricultural Biology, National Institute of Agricultural Science and Technology, Rural Development Administration)
• Seunghwan Lee(School of Agricultural Biotechnology, Seoul National University)