There's a good reason why jumping spiders are named "jumping spiders."

They jump. 

A jumping spider, according to National Geographic, can jump 50 times its body length. 

We saw this jumping spider (family, Salticidae and probably genus Phidippus) in our flower bed last weekend.

Perched on a pink petunia, it waited for dinner, its four pairs of eyes surveying the floral menu; its rear legs poised to jump; its front legs ready to grasp unsuspecting prey. Meanwhile, its iridescent chelicerae glistened in the sunlight. 

Wikipedia says that "the genus name is likely derived from Cicero's speech speech Pro Rege Deiotaro (Speech in Behalf of King Deiotarus): Phidippus was a slave who was physician to King Deiotaros. Literally, the word means 'one who spares horses' in Ancient Greek."

One thing's for sure: A hungry Phidippus would not "spare" a bee! Check out this National Geographic video on You Tube about a jumping spider and a honey bee.