[Insecticidal action of synthetic girgensohnine analogues and essential oils on Rhodnius prolixus (Hemiptera: Reduviidae)].

Introduction: The alkaloid girgensohnine has been used as a natural model in the synthesis of new alkaloid-like alpha-aminonitriles with insecticidal effect against disease vectors.

Objective: To evaluate the biocide activity of girgensohnine analogues and essential oils of Cymbopogon flexuosus, Citrus sinensis and Eucalyptus citriodora in stage I and stage V Rhodnius prolixus nymphs.

Materials And Methods: We used a topical application model in tergites and sternites, as well as exposure to treated surfaces with different exploratory doses of each of the molecules and essential oils to determine the lethal doses (LD50 and LD95).