The treatment with the formulated strain (MAPAL2 of M. anisopliae) has caused the highest % of mean adult mortality of insects per strain of entomopathogenic fungi in comparison with the control (80.25% versus 8.83%, respectively, Table 2). Significant differences (at P = 0.05) were obtained between the average mean % of adult mortality of insects/strain of entomopathogenic fungi for the formulated, unformulated MAPAL2 strain, blank formulation of invert emulsion and the untreated control (80.25, 57.50, 18.83 and 8.83%, respectively, Table 2). Therefore, the formulation of the above strain in invert emulsion has enhanced its efficacy in comparison with the unformulated form since the average mean % of adult mortality of insects/strain of entomopathogenic fungi increased significantly from 57.50 to 80.25% (Table 2).