Knipolegus is the genus of black tyrants, birds in the family Tyrannidae. It contains the following species: \n* Cinereous tyrant, Knipolegus striaticeps \n* Hudson's black tyrant, Knipolegus hudsoni \n* Amazonian black tyrant, Knipolegus poecilocercus \n* Jelski's black tyrant, Knipolegus signatus \n* Plumbeous tyrant, Knipolegus cabanisi \n* Blue-billed black tyrant, Knipolegus cyanirostris \n* Rufous-tailed tyrant, Knipolegus poecilurus \n* Riverside tyrant, Knipolegus orenocensis \n* White-winged black tyrant, Knipolegus aterrimus \n* Sao Francisco black tyrant or Caatinga black tyrant, Knipolegus franciscanus \n* Velvety black tyrant, Knipolegus nigerrimus \n* Crested black tyrant, Knipolegus lophotes