For Emily Hess, it was a Phidippus regius named Gretel. Hayden Shea's first was caught by her boyfriend's dad. Sunday Costell ordered her first one off eBay. "I went from selling three to four a week ...

A rare species of jumping spider, Pilia malenadu, has been rediscovered after a century of absence. Females were recorded for the first time.

Some jumping spiders look so much like wasps that scientists named them for the predatory insects. But University of Cincinnati biologists wondered: Do these mimics really look like insect faces or is ...