As their name suggests, these spiders can leap, either to attack prey or to move about.
They jump much farther than their own body length. Instead of muscles, though, they use a hydraulic system that depends on the pressure of hemolymph, a body fluid that plays the role of blood and lymph in arthropods.
This is the largest family of spiders, in fact, with over 5,600 species across the world, including at least 43 in Quebec. Phiddipus purpuratus is the biggest jumping spider in the province, and can be over 1 cm long. Its range extends as far north as the spruce forests of northern Quebec.
Jumping spiders have the best eyesight of all spiders. They can see behind themselves and are capable of detecting motion several metres away.
These spiders can bite, but are not dangerous to humans.