In 1985, Pierre Ferron reviewed the status of a “hundred-year-old hypothesis” that the entomopathogemc fungi would one day become integral components of many insect-pest management systems. He concluded his review by stating the need to “define precisely the ecosystems in which these natural enemies effectively play a positive role, and to determine the treatment strategies necessary to the expression of their potentialities, in order to have available reliable methods suitable with other phytosamtary techmques, accordmg to the integrated protection concept” (1 ).