 Though most known spiders are almost exclusively carnivorous, a few species, primarily of jumping spiders, supplement their diet with plant matter such as sap, nectar, and pollen.However, most of these spiders still need a mostly carnivorous diet to survive, and lab studies have shown that they become unhealthy when fed only plants.One exception is a species of jumping spider called "Bagheera kiplingi", which is largely herbivorous, feeding mainly on the sugar rich Beltian bodies produced by acacia plants.