Parent: Tyrannidae (Tyrant flycatchers)

└─ Serpophaga

└─── Serpophaga cinerea (Torrent tyrannulet)

└─── Serpophaga hypoleuca (River tyrannulet)

└─── Serpophaga munda (White-bellied tyrannulet)

└─── Serpophaga nigricans (Sooty tyrannulet)

└─── Serpophaga subcristata (White-crested tyrannulet)