A honey bee stinger removed from the bee keeps pumping venom on its own as a double-piston pump, high-speed video of stingers in a clear skin-like gel shows
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A honey bee stinger keeps pumping venom after it has been separated from the bee. In a study published in PNAS on 12 October 2026, Fiorella Ramirez-Esquivel and colleagues at Macquarie University and UNSW Canberra set detached stingers in a clear, skin-like gel and filmed them at high speed as they drove themselves deeper. Inside each one, two flexible valves take turns pushing venom towards the tip, working like a double-piston pump.
The footage shows how that pump runs once a sting is under wa
The footage shows how that pump runs once a sting is under wa
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