part of part of develops from develops from insect dorsal metathoracic disc primordium insect larval metathoracic segment insect dorsal thoracic disc insect haltere disc UBERON:6001779 FBbt:00001779 Dorsal imaginal disc of the metathorax. Precursor of structure of the adult dorsal metathorax including the haltere. dorsal metathoracic disc