This research explores how certain fungi evolved from living on dead organic matter to becoming parasites of insects. The study reveals that an important fungal characteristic – the ability to forcefully shoot spores – evolved before these fungi became parasitic, rather than as an adaptation for infecting insects. This has important implications for understanding how parasitic relationships develop in nature. Impacts on everyday life: • Helps explain how beneficial insect-killing fungi evolved, which is important for biological pest control • Provides insights into the evolution of fungal diseases that can affect humans and animals • Improves our understanding of how organisms adapt to new ecological roles • Aids in developing better strategies for controlling harmful insects using natural fungal enemies • Contributes to our knowledge of biodiversity and ecosystem relationships