Spodoptera exigua Hubner. is a major pest in onion crops. Biological control using local Beauveria bassiana (Bals.) Vuillemin to control S. exigua. The effectiveness of the local B. bassiana can be protected by the addition of a carrier. This study aims to determine the best carrier in the flour formulation of local Beauveria bassiana entomopathogenic on the mortality of Spodoptera exigua larva…