Abstract
The identities of two species of Korean Isometopinae (Hemiptera: Miridae) are clarified based on examination of their type material. The following new synonyms are proposed: Isometopus amurensis Kerzhner, 1988 = Isometopus jejuensis Kim & Jung, 2016, syn. nov. and Myiomma ussuriense Ostapenko, 2001 = Myiomma koreanum Oh & Lee, 2025, syn. nov. Isometopus citri Ren, 1987 is reported from Korea for the first time. Life histories of I. amurensis Kerzhner, I. japonicus Hasegawa, 1946, and I. rugiceps Kerzhner, 1988 are documented based on Korean individuals.