Losengo (Lusengo) is a Bantu language spoken in the Democratic Republic of the Congo. It has had a significant effect on Lingala, the most important Bantu language in the two Congos.
Maho (2009) lists the following dialects: Poto (Pfoto), including Yakata Mpesa (Limpesa) Mbudza (cf. the related Budza language) Mangala (Ngala) [the name of the Bangi lingua franca that became Lingala] Loki (Boloki) Kangana Ndolo
(Yamongeri, however, is a variety of Mongo.)
References