The “white muscardine” fungus which is known as Beauveria bassiana is one of several entomopathogenic fungal organisms that are labeled for use in managing a wide array of insects in greenhouses and in nurseries. Beauveria bassiana as an entomopathogenic fungus have the capacity to penetrate the cuticle and kill almost every insect that it comes in contact with. While this is generally a good thing, Beauveria bassiana may also kill some biocontrol agents like ladybird beetles if they become exposed to it.
Beauveria bassiana is considered by many entomologists as one of the more effective biocontrol agents to deploy as a plug or cutting dip. Insects and some mites when exposed to this entomopathogenic fungus typically die within 4-5 days after exposure.
Source:https://extension.psu.edu/greenhouse-pest-prevention-with-beauveria-bassiana
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