Imaginal disc
（重定向自Imaginal disk）
![](/Images/godic/202502/08/Imaginal_Disc5045.png")
![Three imaginal discs that will form legs. Taken from Drosophila melanogaster 3rd instar larva. The discs are stained with a hedgehog -protein specific staining, showing the protein's localization.](/Images/godic/202502/08/Drosophila_imaginal_discs5045.jpg")
An imaginal disc is one of the parts of a holometabolous insect larva that will become a portion of the outside of the adult insect during the pupal transformation. Contained within the body of the larva, there are pairs of discs that will form, for instance, the wings or legs or antennae or other structures in the adult. The role of the imaginal disc in insect development was first elucidated by Jan Swammerdam.