Mason Bee Predator Alert: Invasive Houdini Fly is Spreading Across North America

SEATTLE, April 22, 2026 /PRNewswire/ -- The invasive Houdini fly (Cacoxenus indagator), a kleptoparasitic insect about the size of a fruit fly, is spreading across North America and significantly impacting mason bee populations. Over her lifetime, a single Houdini fly may lay 300–500 eggs...