Figure 1. Drosophila imaginal discs are the larval precursors to adult tissues.

The imaginal discs are epithelial tissues derived from the larval epidermis and are the precursors to most external adult tissues. These include the eye (pink) and antennal (fuschia) discs, the labial disc (brown), the leg discs (yellow), the wing (blue) and haltere (green) discs, and the genital disc (purple).