Phiddipus Regius "Isla Juventud" - Jumping Spider

Isla (Cuba) Locale: Regal Jumping Spider: Phidippus regius

Stage: i4 (4th Instar) | Origin: Captive Bred

The "Isla" Advantage

High-Contrast "Panda" Look: While adult females can vary, the Isla locale is famous for producing high-contrast individuals with stark white markings against deep, jet-black bodies.

Compact & Robust: Though they are part of the "Regal" family, many keepers find the Isla locale to have a slightly more compact, "stocky" build compared to the long-legged mainland Florida spiders.

Bold Island Personality: Hailing from the Isle of Youth, these spiders are notoriously brave. They are active explorers and tend to spend a lot of time out in the open, making them excellent "display" pets.

Vivid Facial Masks: Mature females often develop beautiful, crisp "eyebrow" markings and iridescent chelicerae (mouthparts) in shades of deep teal and violet.

Specifics for i4 Slings

Size: Currently approx. 5–7mm (roughly the size of a small pea).

Current Diet: Hunting Drosophila hydei (Large Fruit Flies) with extreme confidence.

Appearance: At the i4 stage, they are in their classic "juvenile tuxedo"—sleek black with white abdominal spots. Their high-contrast Cuban patterns will begin to sharpen and reveal themselves over the next few molts.

Sexing: Sold as unsexed.

UK Care Requirements

Humidity: 70% – 80%. As a tropical island locale, they thrive with higher humidity. Provide a light misting every 1–2 days.

Temperature: Prefers 24°C – 28°C. In the UK, a thermostat-controlled heat mat is essential to mimic the warm Cuban climate and keep their metabolism high. Read our blog post here

Lighting: Bright, indirect light is vital. These are visual hunters who love to bask in the brightest spots of their enclosure.

The Growth Journey: Transitioning Feeders

Our i4 Isla slings are currently established on fruit flies, but they are ambitious hunters.

Future Diet: We recommend transitioning to Green Bottle flies at the i6 or i7 stage. Their active hunting style makes them fantastic to watch when they track down flying prey.

Expert Guide: To learn more about moving your spider to larger prey, read our feeding and transition blog post here.

Important Shipping Update

​We have made the decision to dispatch all live spiders exclusively via Royal Mail Special Delivery (Guaranteed by 1pm).

​The welfare of our spiders is our absolute priority, and we have implemented this policy for the following reasons:

• ​Reliability: Unfortunately, services such as Tracked 24 have recently seen an increase in delayed or lost parcels. When it comes to a living creature, we simply cannot take that risk.
• ​Priority Handling: Special Delivery is a premium service that bypasses the standard post. This means your spider spends as little time as possible in the mail system and isn't left sitting in a delivery office during a backlog.
• ​Reduced Stress: A faster journey means less stress for the spider, ensuring they arrive healthy, hydrated, and ready for their new home.

​Please Note: To avoid any risk of your spider being held in a sorting office over the weekend, we only post orders from Monday to Thursday.

📷 About Our Photos: Variation & Potential

Please Note: The images provided include photos of our actual adult.

However, because these are unsexed juveniles, they have not yet developed their adult colours. Like all Phidippus regius, they undergo a spectacular transformation as they grow. While the Isla lineage is known for its high-contrast and monochrome potential, every spider is a unique individual. The final adult colouration is a result of genetic diversity, making the journey of watching your sling grow an exciting "unboxing" of its true traits!

Note on Sexing:

This spider is sold as unsexed. If you have a preference for a male or female, please message us! We can’t guarantee it, but we’ll always do our best to find your perfect match.