Harpactira namaquensis — Fact Sheet

Harpactira namaquensis · Harpactira namaquensis

Full care guide and sources

📋 At a glance

🏠 Enclosure

This species should be kept alone in a secure fossorial setup. A practical adult enclosure is about 30 x 30 x 30 cm, with more emphasis on substrate depth and a safe working layout than on empty height.

Small juveniles do best in modest, secure rearing tubs at first; upgrade gradually instead of putting a tiny spider straight into an adult display enclosure.

Useful basics include:

• Deep packed substrate
• A starter burrow or hide
• Strong lid security
• Good cross ventilation
• Minimal disturbance

For slings, provide a starter burrow against the side of the cup so hydration and molts can be monitored without destroying the retreat. Adults should receive 12-15 cm or more of compacted unfertilized soil, coco fibre, and clay or fine sand, with cork angled into the substrate. The mix must hold a tunnel; pure loose sand is unsafe because it collapses. Quarantine a new spider for at least 60-90 days, ideally away from the main collection, with separate tools and records for prey acceptance, molts, waste, and mites.

Work with the enclosure closed whenever possible. Open it only after the animal has a clear retreat path and a catch cup is ready.

🪨 Substrate and furnishings

The enclosure should support burrowing and retreat behavior.

Useful elements include:

• Deep compact substrate
• Cork bark or a pre-started burrow
• A shallow water bowl
• Minimal stable decoration

💡 Lighting

Ambient room lighting is sufficient, with no need for UVB or basking lamps.

🌡️ Temperature

Suitable approximate temperatures are:

• Daytime: around 22-27°C
• Night: around 18-22°C is acceptable

Avoid chronic overheating. Moderate warmth is safer than pushing very hot conditions, especially in small rearing containers where a heat source can dry the entire setup quickly.

💧 Humidity and water

This species is generally best kept on the drier side with fresh water available. A room reading around 45-60% RH is a useful check, but substrate condition and ventilation matter more than chasing a single number.

Useful principles:

• Mostly dry upper substrate
• Water dish always present
• Avoid frequent heavy spraying
• Slightly more stable moisture lower down if needed

Overflowing the water dish occasionally into one corner is usually safer than misting the whole enclosure. The spider should be able to choose between a dry surface and a more buffered burrow zone.

🪳 Feeding

Harpactira namaquensis is insectivorous.

Suitable foods include:

• Crickets
• Roaches
• Locusts where available
• Mealworms in moderation

As a rough guide, feed slings every 3-5 days, juveniles once or twice weekly, and adults every 7-14 days when body condition supports it.

Do not leave live prey with a spider that has sealed itself in for premolt. A missed meal is normal; prey damage during molt is preventable.

☠️ Safety

Harpactira namaquensis must be managed without direct handling. Clinical reports of bites from some African and Asian tarantulas, including Pterinochilus murinus and Poecilotheria regalis, describe severe pain and delayed or prolonged muscle cramps. These reports justify caution across this group; they do not establish the exact severity of every species or every bite.

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.

🩺 Health — warning signs

Common problems include dehydration from missing water, overheating, insecure lids, and stress from excessive disturbance.

Warning signs include:

• Persistent frantic climbing
• Wrinkled abdomen
• Weak posture
• Failed molt
• Refusal to eat combined with decline

Most problems come from three preventable causes: escape opportunities during maintenance, overheating in a dry setup, or a retreat that is too exposed for the animal to settle.

Because this is a fast Old World species, interventions should stay calm and minimal. Visible injury or severe molt trouble needs experienced help.