Parent: Phylloscopus (Willow warblers)

└─ Phylloscopus trivirgatus (Mountain leaf warbler)

└─── Phylloscopus trivirgatus kinabaluensis

└─── Phylloscopus trivirgatus parvirostris

└─── Phylloscopus trivirgatus sarawacensis

└─── Phylloscopus trivirgatus trivirgatus