Selenocosmia javanensis – Javan Yellow Knee Tarantula | Bold Indonesian Old World | Live Arrival Guarantee

Selenocosmia javanensis – Javan Yellow Knee Tarantula

Size, life stage & quantity options

Choose the exact option from the product selector before adding this item to your cart.

• Size / stock option: 1"+

Measurements are reproduced as listed in the ordering options. If you need a specific body length or leg span, please confirm the measurement with us before ordering.

For a quantity, sex, or life stage not specified in your chosen option, contact Isopod King before purchasing.

Meet Selenocosmia javanensis, the Javan Yellow Knee Tarantula — a striking Old World species endemic to the island of Java, Indonesia. Named for the distinctive yellow-gold banding at the leg joints that contrasts sharply against its dark brown to black body, this species is a standout in any collection. Bold, fast, and unapologetically Old World in temperament, the Javan Yellow Knee is a species that commands respect and rewards experienced keepers with a truly impressive display animal.

Selenocosmia javanensis is a confirmed fossorial species that will readily burrow and establish deep retreats in captivity. Despite its defensive nature, it is an active species that will often be visible near the burrow entrance — especially at feeding time. Its striking coloration and island-endemic status make it a genuine conversation piece for serious hobbyists.

Care Highlights

• Type: Old World Fossorial
• Origin: Java, Indonesia
• Temperament: Defensive and fast; experienced keepers recommended
• Adult Size: 5–6 inch leg span
• Growth Rate: Moderate
• Enclosure: Deep substrate (4–6× body length) with a starter burrow; cross-ventilation preferred
• Temperature: 75–84°F (24–29°C)
• Humidity: Moist lower substrate with drier surface; overflow one side periodically
• Feeding: Voracious feeder; appropriately sized roaches or crickets
• No urticating hairs — relies on speed and threat posture as defense

What You'll Receive

• One (1) live Selenocosmia javanensis — size and sex per variant selected
• Live Arrival Guarantee — we stand behind every animal we ship
• Packed with heat or cold packs as needed for safe transit

Size and sex availability listed by variant. All animals are healthy, feeding, and ready to ship.