Aphonopelma jacobii Tarantula Care Guide
Aphonopelma jacobii
The Aphonopelma jacobii tarantula is a hardy North American species known for its calm temperament, slow movements, and classic terrestrial behavior. Native to arid regions of the southwestern United States and northern Mexico, this species is an excellent choice for keepers who appreciate natural behavior, long lifespans, and low-maintenance husbandry.
Overview
- Common Name: Aphonopelma jacobii Tarantula
- Scientific Name: Aphonopelma jacobii
- Origin: Southwestern United States / Northern Mexico
- Type: Terrestrial, fossorial
- Adult Size: ~4.5–5.5 inches (11–14 cm) leg span
- Temperament: Calm, slow-moving, reclusive
- Experience Level: Beginner to Intermediate
Enclosure
Aphonopelma jacobii thrives in a simple, terrestrial enclosure that allows for burrowing and long-term stability.
- Enclosure Type: Terrestrial enclosure with good ventilation
- Size: Moderate floor space with limited height
- Decor:
- Cork bark hide or starter burrow
- Leaf litter
- Minimal décor to reduce stress
This species often establishes a permanent burrow and may remain hidden for extended periods.
Substrate
- Depth: 4–6 inches
- Type: Organic topsoil, coco fiber, or soil/sand mix
- Moisture: Mostly dry with a slightly moist lower layer
Deep, compactable substrate is essential for proper burrow construction.
Temperature & Humidity
- Temperature: 70–80°F (21–27°C)
- Humidity: 50–65%
This is a drier species. Avoid frequent misting—humidity should come from a water dish and occasional light substrate moisture.
Feeding
Aphonopelma jacobii is a slow but reliable feeder with a low metabolism.
- Prey Items: Crickets, roach nymphs, mealworms (occasionally)
- Feeding Frequency:
- Slings: Once weekly
- Juveniles: Every 7–10 days
- Adults: Every 10–14 days
Long fasting periods are normal, especially in adults.
Water
- Always provide a shallow water dish
- Overflow the dish occasionally to lightly moisten part of the substrate
Clean and refill regularly.
Temperament & Handling
- Generally docile and slow-moving
- Rarely defensive; may kick urticating hairs
- Handling is not recommended, but this species is tolerant of minimal disturbance
Best enjoyed as a display and observation species.
Molting & Growth
- Growth rate is slow, typical of Aphonopelma species
- Females can live 20–30 years or more
- Premolt often includes long fasting periods
Never disturb the tarantula during a molt.
Important Notes
- One of the most forgiving tarantula genera in the hobby
- Overwatering is a more common issue than dehydration
- Excellent species for keepers who value longevity and natural behavior
Summary
The Aphonopelma jacobii tarantula is a classic North American terrestrial species—calm, resilient, and rewarding to keep long-term. With deep substrate, dry conditions, and minimal disturbance, this species will thrive and make an excellent addition to any collection, especially for keepers who prefer a naturalistic, low-intervention approach.
