Grammostola pulchripes

🔤 Taxonomy

Grammostola pulchripes is the currently accepted scientific name. In older hobby use and older care material, the species was very widely listed as Grammostola aureostriata.

The latest rename that hobbyists most often encounter is:

• Grammostola aureostriata -> Grammostola pulchripes (current accepted name in modern catalogs)

English common names used in the hobby:

• Chaco golden knee tarantula
• Golden knee tarantula

German common names used in the hobby:

• Chaco-Goldknievogelspinne
• Goldknie-Vogelspinne

📌 Description

Grammostola pulchripes is a large, attractive New World terrestrial tarantula known for its dark body and contrasting golden striping on the legs. It is one of the classic display species for keepers who want a large, impressive spider with generally manageable husbandry.

Adult size is usually about 7-8 cm body length and about 18-20 cm legspan, with females typically heavier than mature males.

The species is often regarded as calmer than many faster tarantulas, though individual temperament still varies. It is not a handling animal, but it is usually appreciated for its visible, steady behavior and long female lifespan.

Growth is usually on the slower side compared with many popular tropical species. That slower pace is normal and should not be confused with a care problem when temperatures and feeding are otherwise reasonable.

☠️ Venom and safety

A bite from Grammostola pulchripes can cause puncture wounds, pain and swelling. Human bite reports are too uneven to predict an individual reaction or assign a precise venom potency to every species. Do not interpret a quiet animal or a “mild venom” label as permission to handle it.

Urticating hairs are a separate hazard: they can irritate skin and injure eyes. Avoid rubbing exposed skin or eyes; suspected eye exposure needs prompt medical assessment. Keep your face away from the enclosure and wear eye protection and gloves when removing molts or used substrate.

Use long tools and a catch cup, with a second containment tub for transfers in a closed room. Keep hands out of retreats and webbing, do not hand-feed, and do not chase an escaping spider. Keep transfers low to limit fall injuries to the animal.

After a bite, wash the wound with soap and water and contact a poison centre or medical service with the scientific name and time of exposure. Seek urgent care for severe or spreading pain, muscle cramps or persistent symptoms; call emergency services for breathing difficulty, throat swelling or collapse. Do not cut the wound or try to extract venom. Treatment focuses on wound assessment and symptom control under medical supervision.

🌍 Distribution

Grammostola pulchripes is native to Paraguay and adjacent parts of Argentina and Brazil. In the wild it is associated with Chaco grassland, scrub and seasonally dry open habitats with burrows.

In captivity, that background points to:

• a low terrestrial enclosure with more floor space than height
• enough substrate for digging or reshaping a retreat
• dry to moderately dry surface conditions with a water dish available
• strong ventilation and stable warm room temperatures
• fall prevention, because heavy terrestrial tarantulas are easily injured

🌡 Climate across the native range

Monthly climate normals from reviewed GBIF occurrence locations:

Weather data by Open-Meteo.com · CC BY 4.0 · Monthly normals calculated by Herpeton Academy from daily archive values.

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

⚖️ Legal status

No current CITES listing or specific EU wildlife trade annex listing was found for Grammostola pulchripes in the official sources checked for this article. The species is not relevant to the Bern Convention because it is not native to Europe.

Local rules on import, sale, transport, breeding, and proof of legal origin may still apply. Captive-bred animals from reputable sources remain the safest choice.

🤌 Husbandry

• Adult enclosure: 60 × 45 × 35 cm (length × width × height).

Height includes substrate. Keep the open drop above it short, with no hard landing surfaces; enlarge the footprint for an unusually large adult.

Grammostola pulchripes should be kept alone in a secure terrestrial enclosure.

Young spiders should be raised in secure, simple containers first, with larger housing introduced only when they can use the extra space safely.

Stage management is especially important in large terrestrial species. Slings need smaller containers with reachable prey and slightly more stable moisture around part of the substrate. Juveniles can be moved up gradually as they gain size. Heavy adults need low, stable enclosures with deep substrate and no tall fall zone, because abdominal injuries from falls are a serious risk.

The essentials are:

• More floor space than height
• Firm dry substrate
• A stable hide
• A shallow water dish
• Good ventilation

An adult is often kept in an enclosure around 60 × 45 × 35 cm or larger. Very tall setups should be avoided because a fall can seriously injure a heavy terrestrial tarantula.

💡 Lighting

Keep lighting simple: ordinary room light and a consistent day-night cycle are enough.

Strong lamps are unnecessary and can create avoidable overheating or drying.

🌡 Heating and temperature

This species usually does well at moderate warm room temperatures:

• Daytime air: 20-26 °C
• Night: 18-21 °C

It is more important to avoid chronic overheating than to chase very high temperatures. Prolonged temperatures around or above 30°C increase stress and dehydration risk.

💧 Humidity and water

Grammostola pulchripes is usually best kept mostly dry with access to fresh water at all times. The substrate should not be maintained wet.

Practical points:

• Keep most of the substrate dry
• Provide a clean water dish at all times
• Avoid heavy frequent spraying
• Maintain airflow

Moderate room humidity is generally enough if the spider always has water access.

🌿 Enclosure and decoration

Suitable substrate can include compacted coco fiber, unfertilized topsoil, or dry tarantula-safe soil mixes. The species may rearrange the entrance to a hide or create a shallow retreat, but it does not need a wet burrowing setup.

Useful enclosure elements include:

• Cork bark or similar hide
• Dry firm substrate
• Open walking space
• A shallow water bowl
• Minimal stable decoration

Unsafe climbing decor and mesh lids are best avoided.

🪳 Feeding

Grammostola pulchripes is insectivorous. Suitable staple prey includes:

• Crickets
• Roaches
• Locusts where available
• Mealworms or superworms only in moderation

Young spiders can be fed more often, while adults usually need a 7-14 day rhythm adjusted to abdomen size, recent molts, and prey size.

Like other Grammostola species, it may occasionally fast for a while without this automatically indicating illness.

Feeding changes with age. Slings can eat smaller prey or prekilled pieces more often, but uneaten prey should come out quickly, especially around premolt. Adults need less frequent meals, and an oversized abdomen is a reason to slow down, not feed more.

🩺 Common problems

The most common problems are linked to excess moisture, overheating, dehydration through neglected water access, fall risk, and stress from unnecessary disturbance.

Warning signs include:

• Wrinkled abdomen
• Weak posture or poor movement
• Persistent climbing in unsuitable conditions
• Refusal to eat combined with visible decline
• Failed molt

If there is severe dehydration, visible injury, leaking hemolymph, or a difficult molt, seek experienced exotic-veterinary help where possible.

📌 Conclusion

Grammostola pulchripes is a classic large display tarantula that usually rewards keepers who stay simple and consistent. A low enclosure, dry substrate, fresh water, moderate warmth, and patience with its slower pace are the foundations of good long-term care.

📚 Sources and further reading

Taxonomy and legal references identify names and listing frameworks; they do not establish care limits. General husbandry references support the precautions described. Unless tied to a specific study in the text, the numerical enclosure, climate and feeding recommendations are editorial planning guidance, not experimentally established species-specific limits.

• Species+: CITES and EU listing records
• CITES Appendices: listing reference
• European Commission: wildlife-trade framework and annex resources
• GBIF: Grammostola pulchripes — taxonomy and recorded distribution; not a husbandry study
• MedlinePlus: tarantula bites and hair exposure
• Kaderka et al. (2019): urticating setae in tarantulas
• Waggoner et al. (1997): eye injury from tarantula hairs
• University of Illinois veterinary guidance: feeding precautions, water and undisturbed molting; general tarantula guidance
• The Tarantula Collective: grammostola pulchripes — specialist husbandry observations, not experimentally established limits
• Enclosure planning reference: The Tarantula Collective — Grammostola pulchripes — layout guidance; the exact dimensions selected here are an editorial planning example.