wg mutant embryos lack all Keilin's organs. wgL4/wgl-17 embryos grew in in vivo culture, but produced rather small implants containing larval gut, salivary gland, fat body and occasionally Malpighian tubules, but lacked imaginal disc material. Metamorphosed implants were necrotic and none had recognisable adult cuticular structures.
Adult homeotic transformation of wing to notum.