[Experimental study of regulation in the female genital larval anlage ofTenebrio molitor L.]

The femaleTenebrio molitor genital anlage differentiates from a part of the sternal and abdominal integument of the larva. This epidermal tissue shows a very high regulative capacity during the whole life of the larva. This capacity appears only within the regulative area. The presumptive genital epidermis is composed of labile, morphogenetic fields. It shows however a determined axis of polarity controlled by adjacent abdominal tissues forming a part of the regulative area.