Enhanced Infectivity of Oil Formulations of Beauveria bassiana to Cylas formicarius (Fabricius) (Coleoptera: Curculionidae).

Formulations of Beauveria bassiana conidia in a 10% corn oil mixture showed more superior infectivity in both sexes of Cylas formicarius than the formulation of conidia only in laboratory assays. The 50% lethal density of conidia of the oil mixed formulation was lower than that of conidia alone. Mortality of uninfected females reared with males infected with the formulation of oil mixture was higher than that of females reared w/males infected by conidia alone.