New genera and species of Phylini (Heteroptera: Miridae: Phylinae) are described from Mexico and the western United States and two new combinations are created. Roburocoris n. gen. accommodates Psallus maculosus Knight, 1925 and three new species. The four species have a wide distribution in the southwestern United States and Mexico for the most part and are collected on various species of Quercus (Fagaceae). Viscacoris n. gen. is created for Plagiognathus phoradendronae Knight, 1929 and comprises four species from Mexico and the southwestern United States. The four species are recorded from mistletoe (Viscaceae).
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