Stromatopelma calceatum
Featherleg Baboon Tarantula: Advanced Care Guide
Keeper Snapshot: A West African tree-dweller known as the most defensive tarantula in the hobby, with some of the worst venom. It has jumped at keepers to bite. No contact, experienced Old World keepers only.
Group: Industry StaplesDifficulty: Spice 4: AdvancedSetup: Arboreal heavy webber, vertical corkHandling: No handling, long tongs and catch cup only
Use This Guide Safely
- Confirm the exact animal. Match this guide to the species, locality, size, and life stage on your label. If the ID is uncertain, use the more conservative part of the range and ask before changing the setup.
- Change one thing at a time. Treat temperature and humidity as target zones, then watch posture, burrowing, drinking, feeding, and molt behavior before making another adjustment.
- Respect the handling boundary. If the guide says no handling, fast, defensive, or medically significant, plan transfers with catch cups, locked lids, and no bare hands. For serious bites, stings, or symptoms, seek emergency medical care.
Quick Snapshot
| Temperature | 75-82°F |
|---|---|
| Humidity | 60-75%, slightly damp substrate, dry webbing |
| Setup Type | Arboreal heavy webber, vertical cork |
| Substrate | Slightly moist soil/coco, vertical cork above |
| Feeding | Slings weekly, adults every 1-2 weeks |
| Care Difficulty | Spice 4: Advanced |
| Handling | No handling, long tongs and catch cup only |
Humidity zones: Very Low under 30% - Low 30-60% - Low-Moderate 40-70% - Moderate 60-80% - Moderate-High 70-85% - High 80%+ - Very High 90%+
Enclosure Format / Size Class
- Slings: compact secure enclosure, escape-proof vents, pebble-filled dish
- Juveniles: vertical bark setup with heavy webbing anchor points
- Adults (5-6 in): taller, heavily webbed vertical build, vented low and high
Warnings First
- Among the most medically significant tarantula venoms: severe pain, muscle cramping, fever-like symptoms, nausea and intense swelling.
- Extremely defensive. It has jumped toward keepers to bite and strikes repeatedly. Never handle.
- Long tongs, double containment and a staged catch cup every time. No kids or pets in the room.
- Slings drown in open dishes. Keep pebbles or grit in the dish so you open the enclosure less.
- Dense silk blocks airflow. Vent low and high on opposite walls so you never face emergency mold work.
- Premolt: pull uneaten feeders and leave it alone. Wait 5-10 days after the molt to feed.
Simple Care
- Use a tall enclosure with vertical cork for heavy webbing.
- Vent low on one wall and high on the opposite wall.
- Keep the substrate slightly moist and the webbing dry.
- Keep a shallow water dish with pebbles in it.
- Never handle, and never improvise a rehouse.
- Stage long tongs and a catch cup and clear the room, every single time.
Advanced Keeper Notes
Enclosure & Microclimate
- Over-build the ventilation. A stale, moldy setup is the most common reason people end up doing unplanned work on a spider like this.
- Hold 60-75% with slightly moist substrate and a water dish under free-flowing vents. Never seal it to raise humidity, the webbing already cuts airflow.
- Judge by looking, not opening. Check the glass behind the webbing for condensation. If walls stay wet, add ventilation at the next planned rehouse, not now.
- Mist open substrate well away from the silk. A damp silk mass in dead air is trouble.
Feeding, Growth & Maintenance
- Medium feeder: slings weekly, adults every week or two. Drop prey in with long tongs.
- Molting: premolt spiders get sluggish, seal the silk retreat and refuse food for days or weeks. Leave it alone and wait 5-10 days after the molt, until the fangs harden.
Possible Origin / Range
- Likely native range: West Africa, tropical forest canopy and palm crowns.
- Habitat translation: Forest canopy and palm crowns become a tall cork enclosure with heavy webbing, slightly moist substrate, cross ventilation and a water dish, built so you never have to get near the spider.
Advanced Keeper Details
- Ranked at or above Heteroscodra maculata for both venom and defensiveness. It moves deliberately toward a threat and strikes repeatedly.
- Only after extensive Old World experience, and even then with double containment, long tongs and a staged catch cup.
- Same setup as Heteroscodra. The husbandry is simple. The temperament and venom are the whole story.
- Medium growth. Females live about 10-12 yrs.