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Tapinauchenius cupreus
🔤 Taxonomy
Tapinauchenius cupreus is the currently accepted scientific name. World Spider Catalog lists it as an accepted Ecuadorian species.
The 2022 revision of Tapinauchenius, Psalmopoeus, and Amazonius made this genus more precise, so use the full Latin name and locality information instead of broad labels such as purple tree spider.
Older names, trade labels, or important status notes:
- Ecuador locality-sensitive Tapinauchenius trade labels
English common names used in the hobby:
- Ecuador tree spider
- copper tree spider
- Ecuador purple tree spider
📌 Description
Tapinauchenius cupreus is a fast, light-bodied arboreal New World tarantula from Ecuador. It is a display spider for keepers who can work calmly around speed and sudden bolting.
Adults are usually about 10-13 cm legspan. Females are compact and long-lived for their size, while mature males are slimmer and short-lived.
This is not a handling species. It is less medically concerning than Asian Old World tarantulas, but it lacks the slow, forgiving temperament of beginner terrestrial spiders and can escape quickly through small gaps.
Unlike many New World tarantulas, Tapinauchenius does not have urticating abdominal hairs as a primary defense. Retreat and rapid movement are typical, but a cornered animal may bite. Its speed can rival that of advanced Old World species, so previous experience with predictable arboreal rehousing is more relevant than the spider’s modest adult size.
Color can shift with molt, lighting, and age. Do not use a copper or purple sheen alone to identify breeding stock; retain the seller, breeder line, and any locality information.
☠️ Venom
Treat the bite as painful and avoidable. Tapinauchenius is not usually managed as a medically significant genus, but any bite can cause local pain, swelling, and individual reactions.
Use catch cups and long tools. Seek medical advice for serious, spreading, allergic, respiratory, or persistent symptoms.
🌍 Distribution
World Spider Catalog lists Tapinauchenius cupreus from Ecuador. Published natural-history review material records it in a tree cavity association, which fits the arboreal retreat pattern used in care.
In captivity it needs vertical cover, web anchors, clean water, humidity support, and high airflow. A sealed wet box is not a forest tree cavity.
🌡 Climate across the native range
Monthly climate normals from reviewed GBIF occurrence locations:
Orellana — Ecuador
| Month | Min °C | Mean °C | Max °C | RH % |
|---|---|---|---|---|
| January | 20.8 | 25.9 | 30.9 | 82 |
| February | 20.8 | 25.6 | 30.5 | 83 |
| March | 20.8 | 25.4 | 30 | 86 |
| April | 20.7 | 25.2 | 29.7 | 87 |
| May | 20.7 | 25 | 29.3 | 88 |
| June | 20.3 | 24.5 | 28.7 | 88 |
| July | 19.9 | 24.2 | 28.5 | 87 |
| August | 19.8 | 24.7 | 29.6 | 85 |
| September | 20.1 | 25.2 | 30.3 | 84 |
| October | 20.6 | 25.6 | 30.6 | 84 |
| November | 21.1 | 25.9 | 30.7 | 84 |
| December | 20.9 | 25.8 | 30.6 | 84 |
Morona Santiago — Ecuador
| Month | Min °C | Mean °C | Max °C | RH % |
|---|---|---|---|---|
| January | 17.8 | 22.5 | 27.1 | 86 |
| February | 17.9 | 22.5 | 27.1 | 86 |
| March | 17.8 | 22.5 | 27.1 | 87 |
| April | 17.9 | 22.4 | 26.9 | 87 |
| May | 17.9 | 22.3 | 26.8 | 87 |
| June | 17.3 | 21.7 | 26.1 | 88 |
| July | 17 | 21.4 | 25.7 | 87 |
| August | 17 | 21.8 | 26.5 | 85 |
| September | 16.9 | 22.1 | 27.3 | 85 |
| October | 17.6 | 22.7 | 27.8 | 85 |
| November | 17.8 | 22.8 | 27.8 | 85 |
| December | 17.8 | 22.7 | 27.7 | 85 |
Mondana — Ecuador
| Month | Min °C | Mean °C | Max °C | RH % |
|---|---|---|---|---|
| January | 19.8 | 24.7 | 29.5 | 84 |
| February | 19.8 | 24.6 | 29.3 | 85 |
| March | 19.7 | 24.5 | 29.2 | 86 |
| April | 19.7 | 24.3 | 28.9 | 88 |
| May | 19.8 | 24.1 | 28.5 | 88 |
| June | 19.2 | 23.5 | 27.7 | 89 |
| July | 19.1 | 23.5 | 27.9 | 86 |
| August | 19.1 | 24 | 28.9 | 84 |
| September | 19.3 | 24.4 | 29.6 | 84 |
| October | 19.7 | 24.7 | 29.7 | 84 |
| November | 20 | 24.8 | 29.6 | 85 |
| December | 19.8 | 24.8 | 29.8 | 84 |
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
No current CITES listing was found for Tapinauchenius cupreus in the official CITES sources checked on 2026-06-03. No species-specific listing was found in Annexes A-D of the EU wildlife trade regulations. The species is not relevant to the Bern Convention because it is not native to Europe.
Local rules on ownership, import, sale, transport, exhibition, breeding, and proof of legal origin may still apply. Keep invoices, seller or breeder details, import or transfer paperwork where relevant, and photos or records that connect the animal to a lawful source.
🤌 Husbandry
Keep Tapinauchenius cupreus alone in a secure arboreal enclosure.
Spiderlings should start in small vertical containers where food, water, and molts can be checked without giving the spider a straight escape path. Adults can use a 25 x 25 x 40 cm or similar enclosure if the height is filled with usable cork, bark, and web anchor points.
Plan water access before the spider webs over the door. A good layout lets you service the enclosure without tearing apart the main retreat.
Useful adult priorities:
- vertical cork bark or tube
- web anchor points
- cross-ventilation
- water dish or reliable water access
- door layout that blocks sudden bolting
Place the cork close to one side so it forms a dark vertical channel, but leave enough visibility to confirm the spider’s position. Mount the water dish low and opposite the main retreat. Front or side access is preferable to lifting an entire lid above an animal that naturally runs upward.
Quarantine every new arrival separately and use dedicated tools. Record feeding, molts, posture, and any mites or unusual waste before placing it near the main collection. During routine work, close the room, clear a catch-cup route, and open only as far as needed.
For rehousing, set the old and new enclosures inside a larger smooth-sided tub. Connect the retreat openings and guide from behind with a long soft brush. A bolt should be contained with a cup; never chase, grab, or pin this delicate spider.
💡 Lighting
Normal room lighting is enough. UVB and hot basking lamps are unnecessary.
Display lighting should be indirect. Hot light over the upper retreat dries webbing and can push the spider into frantic movement.
🌡 Heating and temperature
Aim for about 23-27°C by day, with nights around 20-23°C.
Warm the room or one side gently if needed. Avoid heat from below; this species spends most of its time above the substrate, while the lower layer helps buffer moisture.
💧 Humidity and water
Aim for about 70-85% with strong ventilation. Provide a water dish for juveniles and adults and keep part of the substrate slightly moist.
The webbed retreat should stay usable, not wet. Condensation film, sour smell, and mold mean moisture is outpacing airflow.
Treat the percentage as a broad signal rather than a spraying target. Add water to one lower corner or slightly overflow the dish, then allow upper bark and webbing to remain dry. Good cross-ventilation should move air through the upper occupied area. If the room is warm and dry, refill more often instead of sealing vents.
🌿 Enclosure and decoration
Use cork bark, branches, and foliage to create private vertical routes. The spider should be able to retreat behind bark immediately after disturbance.
Avoid wide mesh, loose heavy decor, and door gaps. Substrate can be shallow, but it should still buffer humidity and cushion falls.
Five to eight centimetres of firm, unfertilized soil/coco mix is normally enough for an adult arboreal setup; slings may use more substrate and begin closer to the ground. Add narrow branches or foliage as web anchors, but keep the service corridor clear. Check that every vent is smaller than the juvenile’s carapace, not merely smaller than its legspan.
🪳 Feeding
Feed roaches, crickets, locusts where legal, and occasional soft larvae. Adults usually take suitable prey every 7-14 days.
Offer prey near the webbed retreat and remove uneaten prey before molts. Do not use vertebrate prey.
Fast feeding strikes demand long tongs and deliberate placement. Offer a single prey item of suitable size, then close the enclosure before observing. Spiderlings can eat small prey every few days; established juveniles and adults are better paced by abdomen condition. Premolt refusal is normal. Wait until the post-molt fangs are fully dark—often several days for juveniles and around a week for adults—before feeding.
🩺 Common problems
Common problems include dehydration, escape during maintenance, stale wet air, fall injuries, stuck molts, and stress from repeated web destruction.
If the spider sits exposed or bolts at every opening, improve retreat quality and enclosure security before changing temperature or feeding more.
Repeated slips, a shrinking abdomen, curled-under legs, or prolonged floor sitting can indicate dehydration, excessive heat, or decline. A spider on its back is usually molting and must not be turned over. Falls, leaking hemolymph, bite incidents with significant symptoms, or a failed molt call for calm containment and professional medical or exotics-veterinary advice as appropriate.
📌 Conclusion
Tapinauchenius cupreus suits experienced keepers who want a compact, fast arboreal display tarantula. The enclosure must be ready before purchase, because most problems come from speed meeting poor access design.
📚 Sources and further reading
- CITES Checklist and Appendices - legal-status references checked 2026-06-03
- EU wildlife trade regulations - legal-status references checked 2026-06-03
- Bern Convention appendices
- GBIF species backbone entry for Tapinauchenius cupreus
- World Spider Catalog species entry
- Cifuentes & Bertani 2022 revision via GBIF dataset
- Herpeton Academy: Tapinauchenius plumipes care guide — comparative genus-level husbandry context only