"FBbt:00005786"^^ . "Epithelial tube with excretory and osmoregulatory roles connected, via a ureter, to the alimentary canal at the junction of the hindgut and midgut. There are two pairs of Malpighian tubules, the right pair lie at the anterior end of the abdomen, and the left pair at the posterior. Each tubule unites with its partner to form a common ureter which enters the alimentary canal at the junction of the hindgut and midgut (Wessing and Eichelberg, 1978)."^^ . . . "fly_anatomy.ontology"^^ .