Entomogenous Fungi of the Family Entomophthoraceae in the Pacific Northwest

Abstract

Entomophthora sphaerosperma, E. fre-senii, E. virescens, E. grylli, E. muscae and E. forficulae are mentioned. The incidence and biological differences of E. aphidis and E. thaxteriana are discussed. Aseptic methods of collection for culture are descr. Cultural and infection expts. with E. ; aphidis were carried on. Virulence to aphids declined after culture.