Abstract
Aspergillus flavus Link and A. luchuensis Inui have been proven to be pathogenic to all stages of the cecropia moth, Platysamia cecropia. Techniques for the artificial infection are given. Only the pupa is resistant to infection from the surface. This is due to the lipid epicuticle which can be removed, thereby exposing the pupa to infection. The MLD has been computed for A. flavus. A quantitative comparison could be made of the virulence of related spp. of fungi.