Parent: Tyrannidae (Tyrant flycatchers)

└─ Mecocerculus

└─── Mecocerculus calopterus (Rufous-winged tyrannulet)

└─── Mecocerculus hellmayri (Buff-banded tyrannulet)

└─── Mecocerculus leucophrys (White-throated tyrannulet)

└─── Mecocerculus minor (Sulphur-bellied tyrannulet)

└─── Mecocerculus poecilocercus (White-tailed tyrannulet)

└─── Mecocerculus stictopterus (White-banded tyrannulet)