Species-Specific Diet for Jumping Spiders: Regal, Bold, Zebra, and More

Jumping spiders are visual hunters in the family Salticidae, and their diet should reflect that. In the wild, they eat a range of small arthropods, including flies, aphids, crickets, beetles, mites, and even other spiders. That means there is no single feeder insect that fits every species, age, or body size. A regal jumping spider (Phidippus regius) or bold jumping spider (Phidippus audax) can usually handle larger prey than a zebra jumping spider (Salticus scenicus), which stays much smaller.

For most pet parents, the safest rule is to choose prey no larger than the spider's body length, and often a bit smaller for spiderlings or shy feeders. Spiderlings usually start on wingless fruit flies such as Drosophila melanogaster, then graduate to larger fruit flies like D. hydei, tiny house flies, or other small feeders as they grow. Larger Phidippus species often do well with a rotation of fruit flies when young, then house flies, bottle flies, small roach nymphs, or very small mealworms as juveniles and adults. Smaller species, including zebra jumpers, often stay on tiny flies and similarly small prey throughout life.

Species-specific feeding is really about size, hunting style, and safety. Regal and bold jumpers are robust, active hunters and often accept larger moving prey. Zebra jumpers are tiny and can struggle with feeders that are too large, too tough, or too aggressive. Variety can help cover nutritional gaps, but consistency matters too. Feeder insects should be healthy, appropriately sized, and sourced from reputable captive feeder suppliers rather than collected outdoors, where pesticides and parasites are harder to control.

Hydration also matters. Jumping spiders do not drink from deep bowls the way many mammals or reptiles do. Most do better with light enclosure misting or a small water droplet on the enclosure wall, depending on species and setup. If your spider stops eating, looks dull, or stays in a retreat, that may be normal premolt behavior rather than a diet problem. If you are unsure whether your spider is fasting, dehydrated, or struggling with prey size, talk with your vet for guidance.

There is not a single exact number of insects that is safe for every jumping spider. The better guide is abdomen size, life stage, and prey size. A healthy jumping spider usually has an abdomen that looks rounded but not tight or overstretched. If the abdomen looks flat or shrunken, the spider may need food or hydration. If it looks very swollen and the spider is sluggish, skip feeding and reassess in a few days.

As a starting point, many spiderlings do well with a few small fruit flies every 2-3 days. Juveniles often eat one appropriately sized feeder every 3-5 days, while adults may eat one larger feeder or a couple of smaller feeders every 5-10 days. Larger species like regal and bold jumpers may take house flies, bottle flies, or other medium feeders once they are big enough. Smaller species like zebra jumpers usually need tiny prey items more often rather than one large feeder.

Premolt changes the plan. A spider that is building a hammock, refusing food, or moving less may be preparing to molt. During that time, avoid forcing feedings and remove unattended prey. Live prey can stress or injure a spider that is about to molt or has just molted. After a molt, wait until the spider is active and the new exoskeleton has had time to harden before offering food again.

For pet parents budgeting feeder insects, a realistic 2025-2026 US cost range is about $5-$12 for a fruit fly culture, $4-$9 for house fly or bottle fly pupae, and $4-$8 for small mealworms or similar feeders. One culture or cup can last a while for a single spider, especially small species, but larger Phidippus may outgrow fruit flies quickly.

A feeding problem does not always mean illness, but it does deserve attention. Common warning signs include a persistently thin or wrinkled abdomen, repeated missed strikes, dropping prey after catching it, weakness, poor climbing, or a spider that stays tucked away long after a normal molt window. Refusing food for a short time can be normal before a molt, after shipping, or during environmental changes. Refusing food while also looking thin or dehydrated is more concerning.

Watch the prey as closely as the spider. Feeders that are too large, too hard-bodied, or able to bite back can cause injuries. Mealworms and crickets are common examples. If your spider avoids prey that seems oversized, that may be a husbandry issue rather than pickiness. Smaller species such as zebra jumpers are especially vulnerable to prey that is simply too big to subdue safely.

Hydration problems can look like diet problems. A shrunken abdomen, lethargy, and poor coordination may happen when the enclosure is too dry or the spider is not finding water droplets. On the other hand, constantly wet conditions can create mold and stress. Balance matters. If your spider has stopped eating, has trouble moving, or looks weak after a molt, your vet should help you sort out whether the issue is nutrition, hydration, injury, or another health concern.

See your vet immediately if your jumping spider has severe weakness, cannot right itself, has obvious injury from prey, is stuck in a molt, or has gone off food with progressive body shrinkage. Small invertebrates can decline quickly, so early guidance is important.

If your spider is not doing well on one feeder insect, there are several safer alternatives to try. For spiderlings and very small species, wingless fruit flies are usually the easiest starting point. Drosophila melanogaster works well for tiny slings, while D. hydei suits larger juveniles. For bigger Phidippus species, house flies and bottle flies are often excellent because they trigger a strong hunting response and are less likely to burrow or hide than worms.

If you use mealworms or similar larvae, choose very small individuals and supervise closely. Some pet parents offer them in a smooth-sided feeding dish so the spider can see them without the feeder escaping into the enclosure. Small roach nymphs may also work for larger juveniles and adults, but prey size still matters. Avoid wild-caught insects because of pesticide exposure and parasite risk.

For zebra jumpers and other tiny species, think small and soft-bodied first. Tiny flies are usually safer than mini crickets or worms. For regal and bold jumpers, rotating among fruit flies when young, then flies and other appropriately sized captive feeders as they mature, can be a practical approach. The goal is not a perfect menu. It is a safe, repeatable feeding plan your spider can hunt successfully.

If your spider is refusing every feeder you offer, review the basics before changing foods again: enclosure temperature, ventilation, hydration, molt status, and prey size. A spider that is in premolt or stressed from a recent move may not eat even when the feeder choice is correct. If the pattern continues, your vet can help you decide what to try next.