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Aphonopelma hentzi

🔤 Taxonomy

Aphonopelma hentzi is the currently accepted scientific name. Modern Aphonopelma taxonomy has been revised heavily, and older regional names can be confusing. Use the scientific name and locality information when comparing animals or older care notes.

English common names used in the hobby:

  • Texas brown tarantula
  • Oklahoma brown tarantula
  • Missouri tarantula

📌 Description

Aphonopelma hentzi is a hardy terrestrial tarantula from the central and southern United States. It is calm by tarantula standards, but it is slow growing and should still be managed as a display animal, not as a handling pet.

Adults are usually around 10-13 cm legspan. Females usually become heavier and live far longer than mature males.

The appeal of this species is steadiness, not constant visibility. A settled female may sit at the mouth of a burrow for weeks, refuse meals before a molt, and then resume normal feeding without drama. Males become much more mobile after maturity, so a suddenly wandering adult should be sexed and checked rather than forced into a wetter or brighter setup.

☠️ Venom

A bite is usually treated as a painful mechanical injury rather than a major venom emergency, but contact should still be avoided. Urticating hairs are the more common irritation risk during routine care.

🌍 Distribution

Aphonopelma hentzi occurs across parts of the central and southern United States in prairie, scrub, open woodland edges, and burrowed ground. The terrarium should be low, dry to moderately dry, and safe for a heavy-bodied ground spider.

This is a seasonal prairie and scrub tarantula, so a simple dry enclosure with a secure burrow is more natural than a tropical display box. A small seasonal cooling or feeding slowdown can happen in healthy animals, but it should not be forced on thin juveniles, recently shipped spiders, or animals preparing to molt.

Range map

⚖️ Legal status

As checked against current official CITES Appendices and EU wildlife-trade Annex references on 2026-06-01, no current CITES listing or specific EU Annex listing was found for Aphonopelma hentzi. The species is not relevant to the Bern Convention because it is not native to Europe.

In the United States, state, park, landowner, and collecting rules can matter even when the species is not currently listed under CITES. Local and national rules on collection, import, sale, transport, exhibition, breeding, and proof of legal origin may still apply. Captive-bred animals from traceable sources are strongly preferred.

For United States species, legality is often about where the animal came from rather than only international trade. Avoid wild-collected animals from parks, protected land, roadsides, or unclear sellers. Keep purchase records, breeder information, and state or import paperwork where relevant.

🤌 Husbandry

Aphonopelma hentzi should be housed alone. It is not a communal tarantula.

Use smaller secure containers for spiderlings and juveniles, then upgrade gradually. For an adult, a practical enclosure is about 30 x 30 x 30 cm, adjusted around the animal’s build and behavior.

Useful care priorities:

  • Low enclosure with more floor than height
  • Deep shape-holding substrate
  • Stable hide
  • Fresh water dish
  • Dry surface with a slightly moister retreat zone

Start spiderlings in small, low containers with enough substrate to make a starter burrow. A small sling kept in a large adult box can miss prey, dry unevenly, or disappear where the keeper cannot check hydration. Increase enclosure size in stages after molts, keeping the fall distance low at every stage.

Adults should have more floor area than height, a firm hide, and enough substrate to dig or block the entrance. Aphonopelma species often benefit from calm routines. Do not keep moving the hide because the spider closed it, and do not mistake a long fast for a demand for more humidity. Check body condition, water access, and temperature first.

New arrivals should be quarantined and left mostly undisturbed until they use the hide and take prey reliably. Wild-origin or recently collected animals may arrive thin, stressed, or carrying mites. A simple enclosure with clean water and stable temperatures is safer than a planted display during the settling period.

💡 Lighting

No specialist lighting or UVB is required. A normal room day-night rhythm is enough; any plant light should not overheat or dry the enclosure.

🌡 Heating and temperature

A practical daytime range is about 20-26°C, with a night drop around 16-21°C. Avoid hot lamps aimed at a small enclosure; warming the room is usually safer than creating a dry hot spot.

These spiders tolerate normal household variation better than many tropical species, but they still need stability. Cool nights are acceptable; cold, damp, and unfed is not. A mild winter slowdown can be allowed for healthy adults if the room naturally cools, but avoid forced brumation for small juveniles or animals that arrived recently.

💧 Humidity and water

Aim for about 40-60% with fresh water always available. The goal is usable microclimates: not bone dry, not wet throughout, and never stale.

For Aphonopelma, a water dish and a dry surface are more important than chasing a high humidity number. Overflow the dish or dampen one corner occasionally if the room is very dry. The spider should be able to choose between a dry entrance and a slightly moister lower area. Constantly wet substrate often causes more problems than a moderate dry cycle.

🌿 Enclosure and decoration

Use substrate that holds shape, stable cork or hide pieces, and enough cover for the spider to retreat completely. Avoid mesh surfaces that can catch claws, unstable hard decor, and excessive height for terrestrial or fossorial species.

The best enclosure is plain and low. Use compacted coco fiber, unfertilized soil, clay-soil mix, or another tarantula-safe substrate that keeps a burrow entrance from collapsing. Adults often use 10-15 cm of substrate if it is offered, especially when the hide is partly buried.

Avoid tall rocks, branches, and hard ornaments. A heavy terrestrial tarantula can rupture the abdomen in a short fall. If a mesh lid is already in use, replace it or cover the dangerous interior surface so claws cannot catch during climbing.

🪳 Feeding

Feed suitable live insects such as roaches, crickets, locusts where legal, and occasional mealworms or superworms. Juveniles usually eat more often; adults commonly do well on an appropriately sized meal every 7-14 days. Remove uneaten prey promptly, especially before a molt.

Feed according to body condition rather than excitement at the tongs. A rounded but not swollen abdomen is the target. Spiderlings can take small prey more often, while adults usually do better with one suitable meal every 7-14 days and longer pauses before molts or seasonal slowdowns.

Use prey no larger than the spider can subdue safely. Roaches, crickets, and locusts where legal are useful staples; mealworms and superworms should not be left to burrow into the substrate. Remove uneaten prey within a few hours, and always remove live prey when the spider is in premolt or has just molted.

🩺 Common problems

Common problems include dehydration, stale wet substrate, overheating, falls, escape during maintenance, and difficult molts. A tarantula resting on its back is often molting and should not be disturbed.

Common mistakes are too much height, too much moisture, and too much interference. A spider that refuses food but remains heavy and sealed in a burrow may simply be in premolt. A spider with a shrinking abdomen, poor posture, or weak movement needs a water check, temperature check, and a review of recent handling or shipping stress.

Do not dig out a closed burrow unless there is a clear emergency. During molt, leave the spider untouched and remove feeders. If there is a fall injury, leaking hemolymph, severe dehydration, or a bad molt, keep handling minimal and contact an experienced exotics veterinarian where possible.

📌 Conclusion

Aphonopelma hentzi is one of the calmer North American tarantulas, but the best care is still hands-off. It rewards patient keepers who provide deep substrate, clean water, ventilation, and seasonal quiet periods without overhandling.

The best keeper for this species is patient. Success comes from dry safe housing, water access, low fall risk, legal sourcing, and the restraint to leave a settled spider alone.

📚 Sources and further reading