This killer fungus strikes at sunset. Here’s how

Entomophthora muscae has an internal clock that controls the timing of flies’ deaths

A fly under a spotlight with white foamlike masses extending out of its back.

No, this fungi-infected fly did not just step out of a bubble bath. The white, sudsy looking structures erupting from the insect's back are for launching fungal spores.

Carolyn Elya Lab

For decades, a grisly mystery has buzzed around one fly-killing fungi.