Osca is a genus of horse-flies in the tribe Scionini.
Species Osca abdominosa (Philip, 1968) Osca albithorax (Macquart, 1838) Osca aureonigra Kröber, 1931 Osca aureopygia (Philip, 1968) Osca collaris (Philippi, 1865) Osca lata (Guerin, 1835) Osca nigribella (Wilkerson, 1984) Osca rubriventris Kröber, 1930 Osca rufa (Macquart, 1838) Osca sublata (Philip, 1968) Osca varia (Walker, 1848)
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