Lecanicillium is a genus of fungi in the order Hypocreales and is described as anamorphic Cordycipitaceae; 21 species are currently described. These are entomopathogenic fungus species that were previously widely known as Verticillium lecanii (Zimmerman) Viegas. The IndexFungorum records the following species: At least 15 products based on Lecanicillium spp. have been, or are in the process of being commercialized as biological pesticides, against a variety of pests in numerous countries worldwide.