Regal Jumping Spider (Phidippus regius): Care, Size, Temperament & Cost

The regal jumping spider (Phidippus regius) is one of the largest jumping spiders in eastern North America and is especially well known from Florida and the southeastern United States. Adult males average about 12 mm long, while females average about 15 mm and can reach roughly 22 mm body length. In the pet trade, adults are often described by diagonal leg span, with many females reaching about 1 to 1.25 inches overall. Their large forward-facing eyes, bold colors, and active hunting style make them one of the most engaging pet arachnids for beginners and experienced keepers alike.

Temperament is usually described as curious, alert, and fairly tolerant of observation. Many captive-bred regal jumpers spend time out in the open instead of hiding all day, which is a big reason pet parents enjoy them. That said, they are still delicate invertebrates. They can jump quickly, stress easily with rough handling, and may be injured by falls, overheating, poor ventilation, or dehydration.

A regal jumper does best in a tall, well-ventilated enclosure with climbing surfaces, moderate warmth, and access to small water droplets from light misting. They are visual hunters, so they need appropriately sized live prey rather than pellets or dead insects. Most do well with a simple setup and careful routine care, but their short lifespan means planning matters. If you are considering one, ask your vet whether there is an exotics or invertebrate-experienced veterinarian in your area before you bring your spider home.

Regal jumping spiders are not known for breed-specific inherited diseases in the way dogs and cats are, but they are very sensitive to husbandry problems. The most common health concerns in captivity are dehydration, trauma from falls or enclosure accidents, failed molts, and decline related to poor ventilation or incorrect humidity. Because these spiders are small and hide illness well, subtle changes can matter. A spider that stops hunting, stays curled, cannot climb smooth surfaces, or remains weak after a molt needs prompt attention.

Molting is one of the riskiest times in a jumper's life. Before a molt, appetite often drops and activity may slow. During this period, handling and feeding should be minimized. If humidity is too low, the enclosure is too dry, or the spider is disturbed, it may have trouble shedding properly. Retained shed, trapped legs, weakness, or inability to stand normally after molting are all reasons to contact your vet.

Abdominal condition is another useful clue. A mildly rounded abdomen is normal, while a very shrunken abdomen can suggest dehydration or underfeeding. A suddenly ruptured or injured abdomen is an emergency. See your vet immediately if your spider is bleeding hemolymph, has a badly twisted leg after a fall, cannot right itself, or shows rapid decline. In many cases, supportive care and enclosure correction are the main tools, but your vet can help rule out infection, severe dehydration, or irreversible injury.

Regal jumping spiders are often considered approachable from a cost standpoint, but the total setup matters more than the spider alone. In 2025-2026 US listings, captive-bred juveniles commonly sell for about $25 to $40, with some baby listings around $10 and selectively bred or mature females reaching $75 to $150 or more. Overnight live-animal shipping can add about $40. A basic arboreal enclosure often runs about $15 to $30, and décor, substrate, thermometer, hygrometer, and feeding tools may add another $20 to $60.

Monthly care is usually modest. Feeder insects such as fruit flies, bottle flies, or small crickets often cost about $5 to $20 per month depending on the spider's age and how many feeders you keep on hand. Replacement décor, substrate, and occasional enclosure upgrades may add a little more over time. Electricity costs are usually low if the room stays in a suitable temperature range and no extra heating is needed.

Veterinary access is the wildcard. Many general practices do not see pet spiders, so you may need an exotics-focused clinic. An exam for an exotic pet can range roughly from $80 to $180, with higher costs if diagnostics, hospitalization, or emergency consultation are needed. Before bringing home a regal jumper, it is wise to budget a realistic first-year cost range of about $100 to $300 for routine setup and care, and more if you choose premium morphs, larger display enclosures, or emergency veterinary support.

Regal jumping spiders are insectivores that need live prey. Appropriate feeders depend on the spider's size and life stage. Spiderlings often start on flightless fruit flies, while juveniles and adults may take house flies, bottle flies, roach nymphs, or very small crickets. Prey should usually be no larger than the spider's body length and should be active enough to trigger a hunting response without overwhelming the spider.

Feeding frequency varies. Young, growing spiders often eat every 2 to 4 days, while adults may eat every 5 to 10 days depending on age, molt stage, and body condition. A slightly rounded abdomen is a better guide than a rigid schedule. Overfeeding can increase the risk of falls and may complicate molting, while underfeeding can leave the spider weak. Wild-caught insects are not a good choice because they may carry pesticides or parasites.

Hydration matters as much as food. Most regal jumpers drink from fine droplets on enclosure walls or décor rather than from a deep water dish. Light misting on one side of the enclosure a few times each week is often enough, provided ventilation remains good. If your spider stops eating, looks thin, or seems weak, do not assume it is a feeding problem alone. Molting, dehydration, stress, and temperature issues can all look similar, so check the enclosure and contact your vet if the change persists.

Regal jumping spiders are naturally active visual hunters. They do not need walks or structured play, but they do need space to climb, stalk prey, and build resting hammocks. A taller enclosure works better than a wide, low one because this species is arboreal and tends to use upper areas for resting and molting. Cork bark, branches, silk plants, and textured surfaces help support normal movement.

Mental stimulation comes from a varied enclosure and appropriate feeding opportunities. Many pet parents enjoy watching their spider track movement, explore new perches, and hunt flies. Frequent handling is not necessary for enrichment and may increase stress or escape risk. If you do interact, keep sessions brief and low to a soft surface because even a short fall can be serious for a small spider.

A healthy regal jumper is usually alert, responsive to movement, and able to climb well. Activity often drops before a molt, after a large meal, or late in life. That can be normal. What is less normal is repeated slipping, inability to grip, persistent hiding with a shrunken abdomen, or weakness after a fall. Those changes deserve a closer look at husbandry and a call to your vet.

Preventive care for a regal jumping spider is mostly about husbandry. Start with a secure, escape-proof, well-ventilated enclosure sized for an arboreal species. Many keepers use a habitat at least four times the spider's diagonal leg span in width and length and six times the leg span in height. Aim for moderate warmth, roughly mid-70s to mid-80s F, and moderate humidity around 50% to 70%, while avoiding stale, wet conditions.

Keep the enclosure clean and low stress. Remove uneaten prey, especially around molt time, because feeder insects can injure a vulnerable spider. Spot-clean waste and replace substrate as needed. Avoid direct sun, overheating, and frequent enclosure rearranging. Watch for normal silk hammocks near the top of the enclosure, because these are often used for resting and molting.

Routine observation is your best preventive tool. Check appetite, posture, climbing ability, abdomen size, and molt progress. Quarantine any feeder cultures that seem unhealthy, and never use insects collected outdoors. If your spider is newly acquired, ask your vet whether they are comfortable seeing invertebrates or can refer you to an exotics colleague. Having that plan in place before a problem starts can save valuable time.