part of continuous with adult maxillary segment apodeme of rostrum-haustellum joint lacinia FBbt:00004536 fly_anatomy.ontology maxillary lobe Paired inner lobate structures with fringed borders, sitting on the apical margin of the rostrum, medial to the base of the maxillary palps. It is continuous with the apodeme of the rostrum-haustellum joint. rostrum multicellular structure