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Aphonopelma seemanni

🔤 Taxonomy

Aphonopelma seemanni is the currently accepted scientific name. World Spider Catalog treats it as accepted and as the type species of Aphonopelma.

Older records and hobby material may use Eurypelma seemanni, Rhechostica seemanni, or the synonym Aphonopelma latens. Use current scientific name, locality, and source records when comparing animals.

English common names and hobby labels:

  • Costa Rican zebra tarantula
  • Costa Rican striped-knee tarantula
  • striped-knee tarantula

📌 Description

Aphonopelma seemanni is a deep-burrowing Central American terrestrial tarantula with bold pale striping on the legs. It is common in the pet trade, but it is faster and more nervous than many keepers expect from an Aphonopelma.

Adults are usually around 10-14 cm legspan. Females can live for many years, while mature males become more mobile and short-lived after maturity.

The main care point is the burrow. A shallow display box makes this species feel exposed, so plan for deep substrate, a secure hide entrance, clean water, and maintenance that does not collapse the tunnel.

🌍 Distribution

World Spider Catalog lists the distribution as El Salvador, Honduras, Nicaragua, and Costa Rica. The species is associated with open ground, scrub, seasonal forest edge, and burrows that buffer heat and dryness.

In a terrarium, this means a warm terrestrial setup with deep substrate and a moisture gradient, not a wet swamp box. The burrow should offer a more humid retreat while the surface can dry between maintenance days.

Range map

⚖️ Legal status

As checked against the current CITES Checklist, CITES Appendices, and EU wildlife-trade references on 2026-06-03, no current CITES listing or specific EU Annex listing was found for Aphonopelma seemanni. The taxon is not relevant to the Bern Convention because it is not native to Europe.

Local and national rules on collection, export, import, sale, transport, exhibition, breeding, and proof of legal origin may still apply. Keep invoices, breeder details, and import or transfer paperwork where relevant; a non-listed trade status is not proof that every animal was sourced legally.

🤌 Husbandry

Aphonopelma seemanni should be housed alone. It is a solitary terrestrial tarantula and does not need or benefit from company.

Use small secure containers for spiderlings, then upgrade gradually as the animal molts. Spiderlings should always have a starter burrow or tight hide and prey small enough to find easily.

For adults, a low enclosure with 12-18 cm of substrate is more useful than extra height. A cork bark starter hide partly buried into the substrate encourages a stable burrow and reduces frantic climbing.

Build the setup around:

  • low terrestrial enclosure
  • deep shape-holding substrate
  • partly buried hide
  • fresh water dish
  • secure lid with good ventilation

💡 Lighting

No UVB or specialist light is required. A normal room day-night cycle is enough.

If plant or display lights are used, keep them weak and off the enclosure lid. Bright heat from above can dry the burrow entrance and push the spider deeper than necessary.

🌡 Heating and temperature

Use a practical daytime range of 22-26°C, with nights around 18-22°C. Stable room warmth is safer than lamps aimed at a small enclosure.

Avoid overheating. Deep-burrowing species use underground retreats to avoid extremes, so the terrarium should provide choices rather than one hot dry surface.

💧 Humidity and water

Aim for about 60-75% with a dry-to-moist gradient. Keep fresh water available, lightly overflow one corner when needed, and let the rest of the surface breathe.

The lower burrow zone can be slightly moister than the top. Constantly wet substrate can cause stale air, mites, and mold; chronic dryness can lead to dehydration and difficult molts.

🌿 Enclosure and decoration

Use compactable substrate such as coco fiber mixed with clean soil or clay. Press it enough that the hide edge and burrow entrance hold shape.

Avoid excessive height, loose rocks, and decor that blocks emergency access. A skittish spider may bolt during maintenance, so keep a catch cup ready and work slowly.

🪳 Feeding

Feed roaches, crickets, locusts where legal, and occasional worms. Juveniles can be fed small prey more often; adults usually do well on a suitable meal every 7-14 days.

Do not panic over fasting if the abdomen remains full and the spider has sealed the burrow. Remove uneaten prey promptly, especially in premolt and after a fresh molt.

🩺 Common problems

Common problems include collapsing burrows, over-wet substrate, dehydration, hair irritation, bolting during maintenance, and stress from repeated digging-out.

A closed burrow is normal for this species. Check water and enclosure conditions, but do not excavate unless there is a real emergency such as flooding, injury, or a feeder trapped with a molting spider.

📌 Conclusion

Aphonopelma seemanni is best for keepers who like burrowing tarantulas and can accept a spider that may stay hidden. Success depends on deep substrate, calm maintenance, traceable sourcing, and resisting the urge to handle a nervous animal.

📚 Sources and further reading