A newly described spider in North Queensland rainforest hunts exactly one prey species — the green tree ant, an insect so aggressive most predators avoid it — by building a silk trap that flings the ant into its web. Macquarie University researchers, writing in Current Biology, found the spider builds a cone of 15 to 60 bundled silk lines near the ground, coats it with a pheromone that lures worker ants into biting it, then retreats.