Poecilotheria regalis

🔤 Taxonomy

Poecilotheria regalis is the currently accepted scientific name. The species was described by Pocock in 1899 and remains one of the best-known Indian ornamental tarantulas in the hobby.

English common names used in the hobby:

• Indian ornamental tarantula
• Indian ornamental tree spider
• Regal ornamental tarantula

As with other Poecilotheria, use the full scientific name when buying, selling, or breeding. Common names such as “ornamental” can refer to several Indian and Sri Lankan species with different legal and conservation concerns.

📌 Description

Poecilotheria regalis is a large arboreal Old World tarantula from India. It is famous for its patterned legs, strong contrast, yellow warning coloration under the front legs, and speed.

Adult size is usually about 16-20 cm legspan, with females heavier and longer-lived than mature males.

This is not a beginner tarantula. It is hardy when housed correctly, but it is fast, defensive when cornered, and capable of a medically significant bite. The correct keeper is someone who already has a secure maintenance routine for quick arboreal species.

☠️ Venom

Treat Poecilotheria regalis as medically significant. Bites can cause intense local pain, swelling, muscle cramps, nausea, dizziness, and discomfort that lasts longer than a typical New World tarantula bite.

Do not handle this species. Use catch cups, long tools, planned rehousing containers, and calm maintenance. If a bite causes serious, spreading, or prolonged symptoms, seek medical advice.

🌍 Distribution

Poecilotheria regalis is native to India. In the wild it is associated with trees, bark retreats, crevices, and forested or wooded habitats where it can shelter vertically during the day and hunt at night.

A practical captive setup should provide:

• a secure vertical enclosure
• cork bark or a bark tube retreat
• strong ventilation
• fresh water
• warm, stable conditions
• minimal disturbance around the main retreat

🌡 Climate across the native range

Monthly climate normals from reviewed GBIF occurrence locations:

Weather data by WorldClim v2.1 · Monthly normals queried by Herpeton Academy from raster values; relative humidity is derived from vapor pressure and mean temperature.

Location references use GBIF.org occurrence data where available; original occurrence records retain their source dataset licenses.

⚖️ Legal status

Poecilotheria regalis is covered by the CITES Appendix II listing for Poecilotheria spp. In the EU wildlife trade system, Poecilotheria tarantulas are treated under Annex B rules.

The species is not relevant to the Bern Convention because it is not native to Europe. Local rules on import, sale, transport, exhibition, breeding, and proof of legal origin may still apply.

Keep purchase invoices, breeder details, import or transfer paperwork where relevant, and photos of the animal and enclosure records. Captive-bred animals from transparent sources are strongly preferable.

🤌 Husbandry

House Poecilotheria regalis alone in a secure vertical enclosure.

Spiderlings should start in small escape-proof arboreal containers where prey, molts, and hydration can be checked. Juveniles and adults need more height, a firm vertical retreat, and enough space for the spider to turn, climb, and web without being forced into the open.

Useful adult priorities:

• Tall enclosure
• Cork bark retreat
• Cross-ventilation
• Water dish
• Secure lid and door
• Clear rehousing plan

Do not build a display enclosure that is hard to service. The best setup lets the spider hide naturally while still allowing water changes and prey removal without forcing contact.

Position the water dish within reach of long tongs and turn the cork opening away from the main service gap. Branches and foliage should not have to be removed to reach the dish. For a major clean or transfer, place the entire enclosure inside a larger clear catch tub. Prepare a rigid cup and card, a second secure container, and preferably another experienced adult before opening anything.

Spiderlings frequently use soil-level crevices or burrow beneath bark despite the adult’s arboreal habits. A compact rearing cup with 3-5 cm of firm moisture-holding substrate and a diagonal cork strip offers both lower cover and a route upward. Increase height gradually as the juvenile becomes confident on vertical surfaces. Rehouse when safe access is lost, not simply because the spider has molted.

Never touch the animal to test whether it is calm. If it appears during maintenance, withdraw tools and let it settle. During transfers, align the two retreats inside the catch tub and use a long soft brush from behind. A keeper’s hand must never become the barrier in front of a bolting Poecilotheria.

💡 Lighting

Specialist lighting is unnecessary. A regular room day-night rhythm is enough.

Avoid intense lamps directly over the enclosure, because overheating and drying can happen quickly in a tall setup.

🌡 Heating and temperature

Aim for stable warm room temperatures:

• Daytime: around 24-27°C
• Night: slight drop acceptable

Do not chase high heat. Warm, ventilated, stable conditions are safer than a hot enclosure with stagnant air.

💧 Humidity and water

Keep humidity moderate and ventilation strong. The enclosure should not be wet, sealed, or stuffy.

Good practice:

• provide a water dish at all times
• keep a small moisture reserve in part of the substrate if needed
• allow surfaces to dry between waterings
• avoid constant misting of the spider’s retreat

For this species, airflow and hydration matter more than hitting a precise humidity number.

Create a gradient by overflowing one edge of the water dish or moistening one lower corner, while allowing the upper bark and webbing to dry between waterings. Take measurements near the occupied hide rather than at the top of the enclosure. Persistent wall condensation, mold, or sour odor indicates too much water for the available ventilation; continuous misting is not a replacement for a drinking dish.

🌿 Enclosure and decoration

Use cork bark, vertical branches, and stable anchor points. The main hide should allow the spider to retreat completely.

Substrate does not need to be deep, but a few centimeters help buffer moisture and give juveniles a secure base. Avoid mesh lids that can trap claws, loose heavy decor, and doors that open directly into the spider’s preferred escape route.

🪳 Feeding

Poecilotheria regalis is insectivorous. Suitable prey includes:

• crickets
• roaches
• locusts where available
• mealworms only in moderation

Spiderlings usually eat every few days. Juveniles can be fed once or twice a week. Adults usually do well on appropriately sized prey every 7-14 days, adjusted to body condition.

Remove uneaten prey when the spider is in premolt or has sealed itself in its retreat.

Use abdomen condition to adjust the calendar. Spiderlings can take small prey once or twice weekly, but established adults may need only one appropriately sized item every 10-14 days. Refusal, retreat sealing, and darker coloration often precede a molt. Leave the spider undisturbed, remove feeders, and wait until the new fangs are fully black and the body is firm before feeding—often at least a week for a large adult.

🩺 Common problems

Common problems include escapes, falls, dehydration, poor ventilation, stress from repeated disturbance, and risky rehousing.

Warning signs include frantic pacing, a shrinking abdomen with poor feeding, difficult molts, and unusual weakness. Before making major changes, check water access, temperature, airflow, prey disturbance, and whether the enclosure gives the spider a secure retreat.

A tarantula lying on its back is usually molting and should not be turned over. Persistent condensation, mites clustered around the mouth, a shriveled abdomen despite fresh water, a fall, leaking hemolymph, or appendages trapped after a molt warrants prompt assessment. Correct an obvious setup error, but seek advice from an exotics veterinarian familiar with arachnids for major injury, severe weakness, or molt failure.

After a bite, first secure the enclosure without risking a second exposure, wash the site, and contact medical or poison-information services. Give the full scientific name and bite time. Do not cut, suction, freeze, or tightly bind the limb. Muscle pain and cramps can be delayed, so later systemic symptoms still require attention.

📌 Conclusion

Poecilotheria regalis is a spectacular display tarantula for experienced keepers who can manage speed, venom risk, and secure arboreal housing. It suits observation, not handling.

📚 Sources and further reading

• World Spider Catalog for current taxonomy
• GBIF species backbone: Poecilotheria regalis
• The Tarantula Collective: Poecilotheria regalis care guide
• Tom’s Big Spiders: Poecilotheria regalis husbandry
• Clinico-epidemiology of Poecilotheria bites in Sri Lanka
• CITES Appendices, checked 2026-06-02
• EU wildlife trade regulations overview, checked 2026-06-02