Epidermis, Tenebrio molitor L., target organ function, juvenile hormone receptor In v ivo tests give evidence that the epidermis is the target organ for the juvenile hormone of insects. A study of the distribution of injected 10,ll-epoxy-6,7-trans-2,3-trans-farnesylpropenylether and of its metabolic products in epidermis, lymphae, and other organs demon strated that the unaltered ether accumul...