[Dual activity of the pars intercerebralis of Panstrongylus megisturs (Heteroptera, Reduviidae) in the control of oogenesis and molting].

The action of A and A' cells of the pars intercerebralis of P. megistus on female gonial mitosis and meiosis is established experimentally by selective ablations and by implantations of brains devoid of their A cells. Molting is dependent on two factors originating in each neurosecretory cell type.