The Mabuso languages are a small family of closely related languages in New Guinea. They were linked with the Rai Coast languages in 1951 by Arthur Capell in his Madang family, which Wurm (1975) included in his Trans–New Guinea (TNG) phylum. Malcolm Ross in his 2005 classification of TNG left the internal classification of Mabuso untouched, except for placing the Kare language in its own branch. He reconstructed the pronouns of proto-Mabuso and noted that "the integrity of the Mabuso group is fairly obvious", suggesting that it is a recent development. However, Ethnologue 16 abandoned the family, placing its four branches directly under Croisilles.
Ross, Malcolm (2005). "Pronouns as a preliminary diagnostic for grouping Papuan languages". In Andrew Pawley; Robert Attenborough; Robin Hide; Jack Golson. Papuan pasts: cultural, linguistic and biological histories of Papuan-speaking peoples. Canberra: Pacific Linguistics. pp. 15–66. ISBN0858835622. OCLC67292782.