Not spiders, but bees. Researchers at the University of Illinois Urbana-Champaign have identified an odorant receptor that allows male bee drones to find a queen in flight. The receptor is present on the male antennae and can detect an available queen up to 60 metres away, which is quite a feat in chemical detection. This is the first time an odorant receptor has been linked to a specific pheromone in honey bees.
Droning on about bee chemistry.
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