Ceratogyrus darlingi

🔤 Taxonomy

Ceratogyrus darlingi is the currently accepted scientific name. GBIF lists older synonymy that still matters in older books, import lists, and keeper records.

Older names and combinations associated with the species include:

• Ceratogyrus bechuanicus Purcell, 1902
• Ceratogyrus schultzei Purcell, 1908

English common names used in the hobby:

• Darling’s horned baboon tarantula
• Rear-horned baboon tarantula
• African horned baboon tarantula

German common names used in the hobby:

• Darings Hornvogelspinne

The “horn” is not a reliable sexing shortcut and may be less obvious in young animals. Use molts or experienced ventral assessment for sexing, and avoid mixing uncertain Ceratogyrus stock in breeding projects.

📌 Description

Ceratogyrus darlingi is an Old World African tarantula known for the horn-like projection on the carapace in larger specimens. It is a defensive display species with fast movement and medically significant bite risk, not a handling spider.

Adult size is usually about 5-6 cm body length and about 12-14 cm legspan, with females typically heavier than mature males.

This species is appealing to advanced keepers because of its unusual appearance, strong feeding response, and heavy webbing around the retreat entrance. Those same traits make maintenance more demanding: the enclosure should be designed so water and food can be managed without destroying the retreat.

☠️ Venom

Ceratogyrus darlingi should be treated as a medically significant tarantula. Published venom work on captive-bred C. darlingi found measurable pharmacological activity, and keeper reports for Old World tarantulas commonly involve severe local pain and possible wider symptoms. A bite can cause intense local pain, swelling and, in some cases, muscle pain, cramping, nausea, dizziness or prolonged discomfort.

Routine pet care does not use a species-specific antivenom for these bites. Avoid handling, work the enclosure so contact is unlikely, and seek medical advice after a serious bite, allergic reaction, breathing difficulty, spreading symptoms, or any bite involving a child or vulnerable person.

🌍 Distribution

Ceratogyrus darlingi is native to southern Africa. Records and trade references most often place it around Botswana, Zimbabwe, Mozambique, South Africa, and neighboring savanna or woodland regions. In the wild it is associated with dry to seasonally dry soils where it uses burrows and silk-lined retreats.

For keepers, the useful habitat cues are:

• 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

Seasonal does not mean unstable captive care. A secure burrow with a dry surface, a small moisture reserve, and good airflow is more useful than repeated whole-enclosure spraying.

🌡 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

As checked against current official sources in May 2026, no current CITES listing or specific EU wildlife trade Annex listing was found for Ceratogyrus darlingi. The species is not relevant to the Bern Convention because it is not native to Europe.

Local rules on import, sale, transport, and proof of legal origin may still apply. Captive-bred animals remain preferable.

Keep records for seller, advertised locality, molt history, and sexing confidence. The older name C. bechuanicus may still appear in inherited records, so note any label changes rather than overwriting them silently.

🤌 Husbandry

This species should be kept alone. A practical adult setup usually emphasizes safe floor space and substrate depth rather than decorative 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 secure hide or started burrow
• Strong enclosure security
• Minimal disturbance
• A water dish

For an adult, use deep compact substrate and offer a starter burrow or cork shelter partly buried at an angle. For slings, smaller containers with a pre-started retreat make feeding and molt checks safer. Expect the spider to web heavily around the entrance; avoid unnecessary teardown.

💡 Lighting

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

Bright direct lighting is unnecessary.

🌡 Heating and temperature

Suitable approximate temperatures are:

• Daytime: around 24-28°C
• Night: slight drops are acceptable

It is safer to avoid overheating than to chase extreme heat.

💧 Humidity and water

Ceratogyrus darlingi is generally kept fairly dry with access to fresh water.

Useful principles:

• Dry upper substrate
• Clean water dish
• Good airflow
• No swampy or constantly sprayed setup

Keep one lower area lightly more humid for molt support, especially in juveniles. Stale damp air is more dangerous than a dry surface with accessible water.

🌿 Enclosure and decoration

The enclosure should support digging and webbed retreat building.

Useful elements include:

• Compact substrate with depth
• Cork bark or a starter hide
• Minimal stable decor
• No dangerous climbing height

A low, front-opening enclosure is convenient only if it closes securely and lets the keeper work without placing hands near the retreat. Top-opening tubs can be safe for juveniles when the lid seals tightly and ventilation holes are too small for escape.

🪳 Feeding

This species is insectivorous and feeds readily on common feeder insects.

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.

Prey should be removed if not taken. A sealed retreat is often premolt or settling behavior, not a reason to leave crickets loose in the enclosure.

🩺 Common problems

Common problems include falls, overheating, dehydration, poor enclosure security, and failed molts under bad conditions.

Warning signs include:

• Lethargic posture
• Wrinkled abdomen
• Persistent stress climbing
• Visible injury
• Failed molt

Old World tarantulas should not be managed casually. If serious problems arise, interventions should be deliberate and minimal.

📌 Conclusion

Ceratogyrus darlingi is best kept as a secure fossorial display species: deep substrate, a stable retreat, dry-surface husbandry, fresh water, and calm tool-based maintenance. It is not suitable for handling or casual rehousing.

📚 Sources and further reading

• GBIF species backbone entry for Ceratogyrus darlingi
• CITES Appendices and Species+ trade database, checked May 2026
• EU wildlife trade regulations and annex references, checked May 2026
• Garcia-Arredondo et al. 2015, pharmacological characterization of theraphosid venoms
• World Spider Catalog and specialist husbandry references where applicable