Ophiocordyceps sphecocephala is a species of parasitic fungus. It is entomopathogenic, meaning it grows within insects, particularly wasps of the genera Polistes, Tachytes, and Vespa. It has been reported across the Americas and China. Physically, its stromata can be 2–10 cm long, and form an egg-shaped head.
This fast growing culture will turn a bright orange red color when exposed to sunlight.