Biology of Phloetribus scarabeoides Bern in the Taroudant area

Obervations on Olive in Southern Morocco, trough periodical analyses of the demographic composition of populations and trap -monitoring of emergences and penetrations, indicate that Phloetribus scarabeoides BERN has at least four generations a year with a remarkable overlapping, because ofthe important coincidence between the emergences and attaks offemales mothers and those of adults issues. A particular attention was given to the hibernating generation whose some larvaes at the end ofthe last stage, nymphs, adults, are subject a facultative developpement - arrest due, probably to a simple quiescence.