[Effect of the destruction of the pars intercerebralis on molting in Aeshne cyanes Müll. larva (Insecta, Odonata)].

The cauterization of the pars intercerebralis blocks the moulting process in Aeshna. The critical period for this experiment has been determined in the 2 last instars. After this period brain cautery only delays moulting without preventing this process. Cauterization of the pars intercerebralis after the critical period of the prothoracic gland activity does not affect moulting in any way.