Poecilotheria tigrinawesseli

🔤 Taxonomy

Poecilotheria tigrinawesseli is the currently accepted scientific name. World Spider Catalog treats Poecilotheria chaojii as a synonym of this species.

English common names used in the hobby:

• Wessel’s tiger ornamental
• Anantagiri’s parachute spider

📌 Description

Poecilotheria tigrinawesseli is a fast arboreal Old World tarantula from India. It is kept for display, not handling, and the enclosure has to be designed around speed, medically significant venom, and reliable paperwork.

Adults are usually about 15-20 cm legspan. Females are heavier and long-lived; mature males become slimmer, restless, and short-lived after maturity.

This is an expert species. A calm individual is still capable of explosive movement, defensive threat posture, and a serious bite.

☠️ Venom

Poecilotheria bites should be treated as medically significant. Reported effects can include intense pain, swelling, muscle cramps, nausea, dizziness, and prolonged discomfort.

Do not handle this species. Use catch cups, long tools, a closed work area, and planned rehousing containers. Seek medical advice after serious, spreading, allergic, respiratory, or persistent symptoms.

🌍 Distribution

World Spider Catalog lists Poecilotheria tigrinawesseli from India. Care should reflect Indian forest and woodland tree retreats, including records associated with the Eastern Ghats region.

In captivity this means a secure vertical retreat, cross-ventilation, clean water, and a moisture gradient that does not turn the enclosure into a sealed wet box.

🌡 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 tigrinawesseli 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.

Keep purchase invoices, breeder details, import or transfer paperwork where relevant, and records that connect the animal to a lawful source. Local rules on ownership, import, sale, transport, exhibition, breeding, and proof of legal origin may still apply.

🤌 Husbandry

Keep Poecilotheria tigrinawesseli alone except for a controlled breeding introduction.

Spiderlings can start in small secure arboreal containers with bark and ventilation. Adults need a vertical enclosure around 30 x 30 x 45 cm or larger, filled with usable cork, bark, and anchor points.

Useful adult priorities:

• escape-proof vertical enclosure
• cork tube or vertical bark slab
• strong cross-ventilation
• water dish or reliable water access
• door layout that blocks sudden bolting

Plan the enclosure around the whole maintenance sequence before the spider moves in. The water dish should be reachable with tongs, the front opening should expose only a narrow service gap, and the cork retreat should face away from that gap. Put the enclosure inside a larger clear tub for major work. A catch cup with a rigid card, a second lidded container, and another experienced adult should already be present before a rehouse starts.

Life stage changes matter. Small spiderlings often use soil-level crevices and may burrow under bark, so a compact container with 3-5 cm of moisture-holding substrate is safer than a tall empty vial. Give them a diagonal bark strip that connects the substrate to the lid without leaving a wide fall zone. Move juveniles only when the existing container no longer allows clean water access or safe feeding; frequent upgrades create unnecessary escape opportunities. Adults need height, but every extra centimeter must be usable cover rather than exposed air.

Never test temperament by touching the spider. If it leaves the retreat during maintenance, stop moving tools and allow it to settle. Do not block a bolting animal with a hand. For rehousing, align the old and new retreat entrances inside the work tub and guide from behind with a long soft brush. A transfer that takes several calm attempts is safer than forcing the spider in one fast attempt.

💡 Lighting

Normal room lighting is enough. UVB and hot basking lamps are unnecessary.

Use indirect display light only. Bright heat above the retreat can dry the upper webbing and force the spider into exposed movement.

🌡 Heating and temperature

Aim for about 23-27°C by day, with nights around 20-23°C. Avoid a hot basking spot.

If extra heat is needed, warm the room or one side gently under thermostat control. The spider must be able to leave the warmest area without leaving its retreat.

💧 Humidity and water

Aim for about 65-80% as a ventilated gradient. Keep water available and maintain some moisture reserve without keeping the enclosure sealed or wet.

Good airflow matters as much as humidity. Condensation, mold, and a sour smell mean moisture is outpacing ventilation.

Measure conditions near the retreat rather than relying on one humidity reading at the top of the enclosure. Overflowing part of the water dish can maintain a moist lower corner while the bark and upper walls dry between waterings. The spider should be able to choose between a slightly damp lower zone and a drier upper retreat. Continuous spraying is not a substitute for drinking water and may drive the animal out of its shelter.

🌿 Enclosure and decoration

Use cork tubes, vertical bark slabs, branches, and foliage to create private routes from floor to top. The retreat should let the tarantula disappear completely.

Avoid wide mesh, loose heavy decor, large door gaps, and layouts where the spider sits directly on the opening path.

🪳 Feeding

Feed roaches, crickets, locusts where legal, and occasional soft larvae. Adults usually do well with suitable prey every 7-14 days.

Offer prey near the retreat and remove uneaten insects before molts. Do not use vertebrate prey.

Adjust feeding to abdomen condition and molt stage, not only the calendar. Spiderlings can take small prey once or twice weekly; established adults may need only one suitable item every 10-14 days. A darkened, withdrawn spider that refuses prey may simply be in premolt. Remove the insect and wait until the new fangs are fully dark and the body has hardened before feeding again—several days for juveniles and often a week or more for a large adult.

🩺 Common problems

Common problems include escape during water changes, stale wet air, dehydration, stuck molts, fall injuries, overfeeding, and rushed rehousing.

Most incidents happen during routine access. Design the enclosure so water, prey, and maintenance can be managed without chasing the spider.

A tarantula lying on its back is usually molting and must not be turned over. Keep prey out and avoid moving the enclosure. Persistent condensation, mites clustered around the mouth, a shriveled abdomen despite water access, a fall, leaking hemolymph, or limbs trapped after a molt requires prompt assessment. Correct obvious setup faults first, but do not improvise medication; contact an exotics veterinarian familiar with arachnids when injury, severe weakness, or a failed molt is evident.

After a suspected bite, move away from the enclosure so a second escape or bite does not occur, wash the site, and contact medical services or a poison-information service. Give clinicians the full scientific name and time of exposure. Do not cut, suction, freeze, or apply a tight tourniquet. Muscle pain or cramps can be delayed, so the absence of immediate systemic signs does not justify ignoring later symptoms.

📌 Conclusion

Poecilotheria tigrinawesseli suits experienced keepers who can manage a secure arboreal setup, conservation paperwork, and no-contact maintenance. Buy only from traceable legal sources.

📚 Sources and further reading

• CITES Checklist and Appendices - legal status checked on 2026-06-03
• EU wildlife trade regulations - legal status checked on 2026-06-03
• Bern Convention appendices
• GBIF species backbone entry for Poecilotheria tigrinawesseli
• World Spider Catalog species entry
• Tom’s Big Spiders: Poecilotheria husbandry notes
• Wessel’s tiger ornamental tarantula bite: case report and venom analysis
• Clinico-epidemiology of Poecilotheria bites in Sri Lanka