Striped Knee Tarantula (Aphonopelma seemanni) Care Guide

Overview

The Striped Knee Tarantula is a striking and hardy species known for its bold black or dark brown body accented by creamy white stripes on its legs. Native to Central America, it is a terrestrial, burrowing species that makes a fascinating display animal. Its manageable size and resilience make it popular with both beginner and intermediate tarantula keepers.

• Scientific Name: Aphonopelma seemanni

• Common Name: Striped Knee Tarantula, Costa Rican Zebra Tarantula

• Origin: Central America (Costa Rica, Honduras, Nicaragua)

• Adult Size: 4–6 inches (10–15 cm)

• Lifespan:

  • Females: 15–20 years

  • Males: 5–7 years

• Temperament: Shy but skittish; may bolt quickly when startled

Enclosure Requirements

• Tank Size: A 10–15 gallon terrarium works for an adult; floor space is more important than height.

• Substrate: 4–6 inches of coconut fiber, peat moss, or soil to allow for burrowing. Keep slightly damp but never waterlogged.

• Temperature: 72–80°F (22–27°C) – room temperature is often sufficient.

• Humidity: 65–75%. Light misting once or twice a week; allow one side of the enclosure to remain dry for balance.

• Ventilation: Essential to prevent mold growth.

• Hide: Provide a cork bark tube, half log, or artificial cave.

• Water: A shallow water dish should always be available with fresh, dechlorinated water.

Diet

Striped Knee Tarantulas are carnivorous hunters that feed on live prey.

• Juveniles (3-inch size): Crickets, small roaches, mealworms

• Adults: Large crickets, dubia roaches, superworms, the occasional small locust

• Feeding Frequency:

  • Juveniles: 2–3 times per week

  • Adults: Once a week

• Notes: Remove uneaten prey after 24 hours to prevent stress or injury.

Behavior & Temperament

• Generally skittish rather than aggressive. They may dart into their burrow when disturbed.

• Rarely flick hairs compared to some New World species, but it can occur if threatened.

• Not recommended for frequent handling – they are fragile, and falls can be fatal.

Handling

• Best kept as a display pet.

• If handling is necessary, be extremely cautious, keep low to the ground, and never restrain the tarantula.

Special Notes

• This species is a prolific burrower, so deeper substrate and hides are appreciated.

• Females are very long-lived and make excellent display tarantulas for years to come.

• Provide a stress-free environment with minimal disturbance for best health.

✅ Summary:
The Striped Knee Tarantula (Aphonopelma seemanni) is a hardy, eye-catching species with striking leg striping and a long lifespan. With a simple setup, proper humidity, and a steady diet of live feeders, this tarantula thrives as a low-maintenance display pet, making it an excellent choice for enthusiasts of all experience levels.