Protosilvius is a genus of flies in the family Tabanidae.
Species Protosilvius gurupi Rafael, Marques & Limeira-de-Oliveira, 2012 Protosilvius inopinatus Zeegers, 2015 Protosilvius longipalpis (Macquart, 1848) Protosilvius mackerrasi Fairchild, 1962 Protosilvius phoeniculus Fairchild, 1962 Protosilvius priscus Fairchild, 1962 Protosilvius termitiformis Enderlein, 1922
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