Pacifimusotima kosrena Ko & Solis, gen. nov. & sp. nov., is described from the Federated States of Micronesia (FSM). We newly combine Parthenodes eugethes (Tams, 1935), comb. nov. and Parthenodes rectangulalis (Kenrick, 1907), comb. nov. in Pacifimusotima Ko & Solis. Illustrations of adults, genitalia, and brief remarks on related species are provided.