Parent: Trochilidae (Hummingbirds)

└─ Oreotrochilus

└─── Oreotrochilus adela (Wedge-tailed hillstar)

└─── Oreotrochilus chimborazo (Ecuadorian hillstar)

└─── Oreotrochilus estella (Andean hillstar)

└─── Oreotrochilus leucopleurus (White-sided hillstar)

└─── Oreotrochilus melanogaster (Black-breasted hillstar)