New and old species of Ommatius Wiedemann (Diptera: Asilidae) from Hispaniola

Four new species of Ommatius Wiedemann, the female of O. stramineus Scarbrough, and the male of O. nigellus Scarbrough from Hispaniola are described. A lectotype for O. gwenae Scarbrough and a neotype for O. cinnamomeus are selected. Notes of previously named species, new records, illustrations of terminalia, and a key to the species are included.