Six new genera comprising ten new species and one new combination of Phylini are described from the western United States. The species are characterized by their orange and whitish coloration, and the host records that are available for all but one species show that they feed primarily on various species of oak (Quercus). Crassomiris, new genus, comprises two species from California and Oregon. The monotypic genera Phallospinophylus, new genus and Quercophylus, new genus, are described from California. The monotypic genus Pygovepres, new genus, is created for Psallus vaccinicola Knight, widespread from British Columbia throughout the western United States, south to California and Arizona. Rubellomiris, new genus, with three species, is so far restricted to California, and Rubeospineus, new genus, is composed of three species from California.