It waits in the dark. The Cicada Killer Fungus does not hunt with speed or claws. It hunts with patience. Spores drift through the soil, seeking the soft underbelly of a cicada nymph. When contact is made, the fungus penetrates the exoskeleton. It grows inside the host, consuming it from within. The nymph dies, but its body remains intact, a hollow shell filled with white mycelium. The fungus takes control. It directs the nymph to burrow closer to the surface. Then, it stops. It waits for the right moment. This fungus is parasitic. It does not decompose dead wood or leaf litter. It feeds on living tissue, specifically the nymphs of cicadas. In doing so, it regulates cicada populations. It is a natural check on abundance. Without it, cicada numbers might surge, affecting the trees they feed on. The fungus is specific. It does not attack other insects. It does not attack humans. It is a specialist, requiring a precise host to survive. The fruiting body is a slender, black stalk that emerges from the head of the buried nymph. It rises through the soil, breaking the surface like a thin, dark needle. The stalk is topped with a fertile head, where spores are produced. It is small, rarely exceeding five centimetres in height. It is easily overlooked, blending into the dark forest floor. It appears in late summer or autumn, when the cicadas are most active underground. The Cicada Killer Fungus is found throughout New Zealand, wherever cicadas and suitable forest conditions exist. It is not common. It is rarely seen, as most of its life cycle occurs beneath the soil. Its presence is a sign of a healthy, functioning ecosystem. Where it grows, the balance between predator and prey is maintained. It is an indicator species, a biological signal that the soil is alive. Threats are minimal. The species is widespread but elusive. However, it is sensitive to changes in soil structure. Logging, fire, or heavy grazing can disrupt the delicate mycelial networks beneath the forest floor. Compacted soil makes it difficult for the fruiting bodies to emerge. Recovery is slow. The fungi wait for the conditions to return. They do not rush. It carries on.