What Do Jumping Spiders Eat: A Complete Guide to Their Diet

When people think of spiders, they often picture large, menacing webs spun in dark corners. However, jumping spiders break every traditional rule. These tiny, charismatic arachnids do not spin webs to catch prey. Instead, they rely on incredible eyesight and remarkable leaping ability to stalk and pounce on their meals. If you have spotted one of these fuzzy hunters in your garden or on a windowsill, you might wonder what do jumping spiders eat to sustain their active lifestyles.

Natural Diet in the Wild

In their natural habitats, jumping spiders are opportunistic carnivores with a varied menu. Because they are active hunters rather than web-builders, their diet consists primarily of live insects and other small arthropods that they can overpower. Their menu often includes:

Flies and gnats
Crickets and grasshoppers
Moths and butterflies
Caterpillars
Ants and small beetles

Interestingly, jumping spiders are also known to hunt other spiders. They will readily consume smaller spider species if the opportunity arises. Because they possess exceptional vision, they can spot potential prey from several inches away, calculating the distance before executing a precise, lightning-fast leap to secure their meal.

What Do Pet Jumping Spiders Eat?

Keeping jumping spiders as pets has grown increasingly popular due to their curious personalities and manageable care requirements. If you are caring for a captive jumping spider, replicating their natural diet is essential for their health and longevity.

The most common staple foods for pet jumping spiders include fruit flies, pinhead crickets, and small roaches. The size of the prey is critical. A general rule of thumb is that the insect should never be larger than the spider’s body length. Offering prey that is too large can intimidate the spider or even injure it if the insect fights back.

Adult jumping spiders generally eat every few days to once a week, depending on their species and age. Younger spiderlings require more frequent feedings, sometimes every day or two, as they are rapidly growing and molting.

How Jumping Spiders Hunt

Understanding their diet also requires looking at how they acquire food. Unlike orb-weavers that wait passively for a fly to stumble into a sticky trap, jumping spiders are visual predators. They have four pairs of eyes, with the front two acting as high-definition lenses that can perceive color and detail.

When a jumping spider spots a target, it freezes, crouches low, and calculates the exact trajectory needed for the jump. Before launching, they always secure a silk safety line to the surface beneath them. This acts like a bungee cord, ensuring they do not fall if they miss their target. Once they land on the insect, they deliver a quick, paralyzing venom bite and consume their meal.

Do They Need Water?

While food is crucial, hydration is equally important. In the wild, jumping spiders get much of their moisture from their prey and from morning dew. For pet spiders, owners typically mist a small corner of the enclosure with clean water using a spray bottle. The spider will drink the tiny water droplets directly from the glass or plant leaves. Avoid placing standing bowls of water in enclosures, as tiny spiders can accidentally drown.

Feeding Frequency and Maintenance

Feeding your jumping spider should be done carefully to maintain a clean environment. Uneaten live prey should be removed from a pet enclosure after a few hours, especially crickets, which can chew on a molting spider when it is vulnerable. Observing your spider’s abdomen is the best way to determine when it needs food. A plump, rounded abdomen means the spider is well-fed, while a shrunken or wrinkled abdomen indicates it is time for another meal.

Providing the right nutrition ensures these fascinating little hunters live healthy, active lives.

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