Xenesthis intermedia — Fact Sheet

Xenesthis intermedia · Xenesthis intermedia

Full care guide and sources

📋 At a glance

🏠 Enclosure

An adult needs at least about 45 x 35 x 30 cm, with 15-20 cm of compact topsoil/coco fiber mix. A little clay can improve tunnel strength. Provide a large cork-bark hide set low, leaf litter, anchor points and the water dish. Secure heavy decor directly so digging cannot undermine it.

🪨 Substrate and furnishings

Limit the gap above the substrate; a fall can rupture the abdomen of this heavy species. Use robust latches, ventilation on opposing sides and holes smaller than the carapace. Avoid mesh lids, sharp rock, loose gravel and waterlogged moss beds. Position the dish where it can be serviced without reaching over the hide.

Premolt brings fasting, darkening, heavy webbing or retreat closure. Remove all live prey and leave the animal undisturbed. Large adults may fast for weeks or months. Wait until the fangs are black and the body is hard—often 10-14 days for a large adult—before feeding.

💡 Lighting

No UVB or basking lamp is needed. A subdued 10-12-hour day-night cycle is sufficient. Keep the retreat shaded, and prevent sunlight from striking glass or acrylic. Plant lights are optional and must not heat the substrate or dry its upper layers faster than the gradient can be maintained.

🌡️ Temperature

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

💧 Humidity and water

Keep a broad shallow water dish full. Maintain the lower substrate evenly damp—not saturated—while letting the immediate surface partly dry between waterings. Add water down one side or lightly overflow the dish so the spider can choose between zones. Slings require closer monitoring because they lose water quickly.

The target is moist structure plus fresh air, not constant condensation. Stale smell, heavy condensation, mushrooms or exploding mite numbers mean too much water and too little ventilation. A dry crumbling retreat, shrunken abdomen or prolonged water-dish posture signals inadequate hydration.

🪳 Feeding

Offer captive-reared roaches, locusts or crickets. One substantial item is preferable to a pile of insects. Feed slings every 4-7 days, juveniles every 7-10 days and adults about every 10-21 days. Adjust using abdomen width, growth, temperature and premolt signs.

The feeding response can be explosive. Drop prey with long forceps and close the lid rather than waving food near the spider. Remove survivors within 24 hours and immediately during premolt. Worms must not be allowed to burrow unnoticed. Supplements are unnecessary for a whole-prey predator.

☠️ Safety

A bite from Xenesthis intermedia 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.

🩺 Health — warning signs

• Urticating hairs: airborne exposure rises during dry clean-outs. Use eye protection, dampen dust lightly and keep the work below face level.
• Fall trauma: large Xenesthis can rupture the abdomen; minimize height and hard surfaces.
• Stagnant enclosure: warmth, saturated substrate and weak ventilation promote mold, mites and respiratory stress.
• Desiccation: completely dry substrate is unsuitable; retain damp lower layers and permanent water.
• Overfeeding: a very large abdomen adds rupture risk and does not improve growth safely.
• Molt interruption: remove prey and never open a sealed retreat or flip a molting spider.
• Misidentification: retain molt photos and origin records; do not breed animals sold only under broad “blue bloom” labels.