Psalmopoeus cambridgei — Fact Sheet

Psalmopoeus cambridgei · Psalmopoeus cambridgei

Full care guide and sources

📋 At a glance

🏠 Enclosure

For adults, 30 x 30 x 45 cm gives better working room than the smallest cube-shaped setups. Use a vertical cork tube or slab, diagonal branches, leaf litter, and cross-ventilation, while keeping a clear route to the water dish.

🪨 Substrate and furnishings

Decoration should solve husbandry problems. Useful decor creates retreats, climbing or burrowing structure, web anchors, shaded routes, and a protected path to water. Decorative clutter that blocks access is a liability.

Use cork bark, bark slabs, branches, leaf litter, and firm substrate in a way that supports the species’ natural retreat style. Do not repeatedly destroy functional webbing or a stable burrow just to make the enclosure look tidy. Remove moldy food remains, dead feeders, and soaked waste, but leave working structure alone when it is clean.

💡 Lighting

Normal room lighting is enough. UVB is not required, and bright basking lamps are more likely to dry or overheat the enclosure than to improve care. A regular day-night rhythm helps observation and feeding routines.

🌡️ Temperature

• Daytime air: 22-27 °C
• Cool zone: 20-23 °C
• Night: 20-23 °C

💧 Humidity and water

Provide moderate to moderately high humidity through a water dish, occasional dampening of one side, and good air exchange. The webbed retreat can stay slightly more humid, but the whole enclosure should not stay wet.

Water should be available at all times in a shallow stable dish. Spiderlings can use a very small dish, dampened substrate patch, or carefully managed water source, but they should not be left in a dry container simply because they are small.

Ventilation is part of humidity control. If the enclosure smells sour, stays wet for days, grows heavy mold, or has condensation that never clears, reduce water input and improve air exchange before blaming the species.

🪳 Feeding

Feed appropriately sized crickets, roaches, locusts, and other safe feeder insects. Prey should usually be no larger than the spider’s abdomen or body length, and it should be removed if not eaten. Never leave live prey with a tarantula that is in premolt, freshly molted, weak, or trapped in a retreat.

Adults often do well with one suitable feeder every 7-14 days, adjusted by body condition. Slings need smaller prey more often, but they also need uneaten prey removed before it damages the spider during a molt.

Refusal is not automatically a problem. Check recent molts, abdominal condition, temperature, disturbance, prey size, and whether the animal can drink. Weight loss, a shriveled abdomen, abnormal posture, or repeated failed molts are more important warning signs than a single missed meal.

☠️ Safety

A bite from Psalmopoeus cambridgei 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.

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

The main preventable problems are bolting during feeding, escape through service gaps, dehydration hidden behind webbing, stale humid air, and falls during forced rehousing. Most of them are enclosure-access problems: the keeper cannot water, feed, or clean without opening too much of the setup or disturbing the retreat.

If something looks wrong, first verify temperature, hydration, ventilation, water access, prey size, retreat fit, recent disturbance, and molt timing. Serious trauma, leaking hemolymph, persistent abnormal posture, breathing difficulty, or a trapped molt needs experienced exotic-veterinary advice when available.

Establish a baseline during the first months: normal posture, preferred retreat, drinking, feeding response, waste location, and reaction to maintenance. Later changes are easier to interpret when you know what normal looked like for that individual.