Brachypelma albiceps

🔤 Taxonomy

Brachypelma albiceps is the currently accepted scientific name. Older combinations associated with the species include:

• Brachypelmides ruhnaui
• Aphonopelma albiceps

English common names used in the hobby:

• Mexican golden red rump tarantula
• Golden redrump tarantula

📌 Description

Brachypelma albiceps is a terrestrial New World tarantula from Mexico, known for its pale golden carapace and contrasting reddish abdomen. It is a sturdy display species that appeals to keepers who like classic Mexican tarantulas with calm, deliberate movement and a dry terrestrial setup.

Adult size is usually about 5-6 cm body length and about 12-15 cm legspan, with females typically heavier than mature males.

Like other Brachypelma, it can flick urticating hairs when stressed and should not be handled routinely. Adult females are long-lived and heavy-bodied, while mature males stay slimmer and have much shorter adult lives.

☠️ Venom and safety

A bite from Brachypelma albiceps 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.

🌍 Distribution

Brachypelma albiceps is native to central Mexico. In the wild it is associated with seasonally dry scrub and tropical dry-forest margins with burrows and root shelters.

For enclosure design, the important takeaways 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

🌡 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

Brachypelma albiceps is listed in CITES Appendix II. In the EU wildlife trade system, Brachypelma tarantulas are treated under Annex B rules.

The species is not relevant to the Bern Convention because it is not native to Europe. In Mexico, Brachypelma species are associated with national protection measures, so wild collection and export are sensitive legal issues. Buying captive-bred animals from reputable sources and keeping proof-of-origin documents is strongly recommended.

🤌 Husbandry

• Adult enclosure: 45 × 30 × 30 cm (length × width × height).

Height includes substrate. Keep the open drop above it short, with no hard landing surfaces; enlarge the footprint for an unusually large adult.

Brachypelma albiceps should be housed alone. It is not a social tarantula and should never be kept communally.

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.

A practical adult enclosure is roughly 45 × 30 × 30 cm or larger, with more floor space than height. Keep the setup simple and dependable:

• Deep substrate for digging or reshaping a retreat
• A secure cork bark hide
• Good cross-ventilation
• A shallow water dish
• No sharp decor or climbing hazards

This species usually does best with stable, simple care and minimal disturbance.

💡 Lighting

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

If live plants are used, lighting should remain moderate and should not overheat or dry the enclosure.

🌡 Heating and temperature

Brachypelma albiceps does well at normal warm room temperatures:

• Daytime air: 20-26 °C
• Night: 18-21 °C

Overheating is more dangerous than mild short-term cooling. Temperatures near or above 30°C increase dehydration and stress risk.

💧 Humidity and water

This species does not need permanently wet conditions. A dry-to-moderately humid setup with fresh water available at all times is usually safest.

A useful approach is to keep most of the substrate dry on the surface while allowing one deeper area to stay slightly more moist. Good ventilation matters just as much as water access.

🌿 Enclosure and decoration

The substrate should hold shape and allow shallow digging. Compacted coco fiber, unfertilized topsoil, or tarantula-safe soil mixes work well. Adults benefit from around 8-12 cm of substrate or more.

Useful enclosure elements include a stable hide, a shallow water dish, deep substrate, and sparse stable decoration. Avoid tall climbing structures, unstable rocks, and mesh surfaces where claws can catch.

🪳 Feeding

Brachypelma albiceps is insectivorous. Suitable prey includes:

• Crickets
• Roaches
• Locusts where available
• Mealworms or superworms only 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.

🥚 Breeding

Brachypelma are often bred in captivity, but pairing should still be planned rather than casual. Both animals should be mature, well fed but not obese, and correctly identified; keepers should avoid mixing uncertain localities or similar-looking species.

A mature male should be introduced to the female’s enclosure only under close supervision, usually after he has made a sperm web. The pair must have escape space and the keeper must be ready to separate them, because cannibalism and injury are possible.

If pairing succeeds, the female may produce an egg sac weeks or months later. Disturbance during this period can cause sac abandonment or eating. Spiderlings require many small ventilated rearing cups, tiny prey, accurate labels, and steady moisture management.

Because Brachypelma species are CITES Appendix II and are normally treated as EU Annex B animals, keep records of the parents, dates, offspring numbers, and transfers. Breed only when there is a lawful, realistic plan for the spiderlings.

🩺 Common problems

The most common problems involve dehydration, excessive dampness, poor ventilation, overly tall enclosures, and mistakes around molting.

Warning signs include a persistently shriveled abdomen, weak posture, repeated wall climbing in poor conditions, obvious decline, and trouble during molts. A tarantula on its back is often simply molting and should not be disturbed.

📌 Conclusion

Brachypelma albiceps is a handsome terrestrial tarantula for keepers who want a classic Mexican species with straightforward care. A low secure enclosure, deep substrate, fresh water, moderate warmth, and patience are the foundations of long-term success.

📚 Sources and further reading

Taxonomy and legal references identify names and listing frameworks; they do not establish care limits. General husbandry references support the precautions described. Unless tied to a specific study in the text, the numerical enclosure, climate and feeding recommendations are editorial planning guidance, not experimentally established species-specific limits.

• CITES Appendices, checked 2026-05-04
• European Commission: wildlife-trade framework and annex resources
• GBIF: Brachypelma albiceps — taxonomy and recorded distribution; not a husbandry study
• MedlinePlus: tarantula bites and hair exposure
• Kaderka et al. (2019): urticating setae in tarantulas
• Waggoner et al. (1997): eye injury from tarantula hairs
• University of Illinois veterinary guidance: feeding precautions, water and undisturbed molting; general tarantula guidance
• Species+: CITES and EU listing records
• The Tarantula Collective: brachypelma albiceps — specialist husbandry observations, not experimentally established limits
• Enclosure planning reference: The Tarantula Collective — Brachypelma albiceps — layout guidance; the exact dimensions selected here are an editorial planning example.