[Histophysiology of the neurosecretory cells of the pars intercerebralis of larval female Panstrongylus megistus (Heteroptera: Reduviidae)].

Important changes in the amount of neurosecretory material in the A and A' cells of the parsintercerebralis during the fifth instar intermoult of P. megistus occur. The release of neurosecretory material at different moments of intermoult, suggests that the A cells induce mitosis and that meiosis is induced by the release of A' cells material.