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Biology’s Mark Willis discusses a new study about brown and black widow spiders

Black widows are vanishing. Here’s their new enemy.
MashableMark Willis, professor and chair of the Department of Biology, discussed a new study explaining why brown widows are driving Southern black widows out of their habitat, in part by attacking and killing the iconic black widow, known for its telltale hourglass mark and venomous bite. “All spiders are predators. They have to kill something to eat. They don’t care if it’s another spider,” Willis said. “There are some spiders that specialize in hunting and eating other spiders. If there’s anything that’s 100% a predator, it’s a spider.”