Now, years later, spores of this same fungus are being used as a mycoinsecticide to control Colorado potato beetles. The spores of at least a half-dozen other fungi are being used to control spittlebugs, leaf hoppers, citrus rust mites and other insect pests. Fungi are also used as biocontrols for other species of fungi which cause root diseases and plant rusts. Many more species of fungi are waiting to be discovered and tested for their use in biocontrol. The organism used by a parasite is called a host.
Some parasites kill their host.
The Biology of Symbiotic Fungi. The Fifth Kingdom.