part of imaginal disc development metamorphosis imaginal disc morphogenesis biological_process The process in which the anatomical structures derived from an imaginal disc are generated and organized. The imaginal discs are epithelial infoldings in the larvae of holometabolous insects that develop into adult appendages (legs, antennae, wings, etc.) during metamorphosis from larval to adult form. GO:0007560 imaginal disc metamorphosis GO:0007452 animal organ morphogenesis instar larval or pupal morphogenesis