The streamertails are hummingbirds in the genus Trochilus, which is endemic to Jamaica. It is sometimes considered a subspecies of "Trochilus polytmus". It was first described by John Gould in 1846 who named it "Trochilus aurescens". Macroglossum trochilus, the African hummingbird hawk-moth, is a moth of the family Sphingidae. The black-billed streamertail ("Trochilus scitulus") is a species of hummingbird in the family Trochilidae. A hybrid between this species and Anna's hummingbird was called ""Trochilus" violajugulum".