part of overlaps adult adult digestive system fly_anatomy.ontology pupal/adult digestive system Digestive system of the adult, comprising the alimentary canal, mouthparts, labellar glands, salivary glands and Malpighian tubules (Miller, 1950). The adult alimentary canal and salivary glands arise anew from precursors during metamorphosis (Bodenstein, 1950). The adult Malpighian tubules are remodelled from those of the larva (Bodenstein, 1950). FBbt:00003123 digestive system