Our work adds 46 species to the 43 previously known from Borneo, bringing the total for the island to 89. Three new species are described: Bactrocera (Bactrocera) melanobivittata Doorenweerd, sp. nov., Dacus (Mellesis) danumensis Doorenweerd, sp. nov., and Zeugodacus (Zeugodacus) cataracta Doorenweerd, sp. nov.