Thailand Big Black (Cyriopagopus minax)

The Cyriopagopus minax is one of the true legends of Old World tarantulas — a large, jet-black earth tiger known for its imposing size, defensive attitude, and raw beauty. Sometimes called the Thailand Black Tarantula, this species is both feared and admired for its power and striking, minimalistic elegance.

Quick Facts

Common Name: Thailand Big Black / Thailand Black

Scientific Name: Cyriopagopus minax

Origin: Thailand, Myanmar, parts of Laos and Cambodia

Habitat Type: Terrestrial burrower

Size: 6–8 inches (15–20 cm) leg span

Lifespan:

• Females: 15–20 years
• Males: 4–5 years

Temperament: Very defensive, secretive, and fast — not for beginners

Coloration

Deep velvety jet-black or dark charcoal body and legs

Subtle iridescent sheen under bright light

Chelicerae (fangs) may show metallic green or bronze hues

Mature males appear slightly lighter in tone

Its pure, minimalist color scheme makes it one of the most intimidating and iconic tarantulas in the hobby.

Housing

Enclosure Type: Terrestrial burrower

Substrate: Deep (6–8 inches) moist mix of coco fiber, topsoil, and clay for burrowing

Humidity: 70–80%

Temperature: 75–82°F (24–28°C)

Decor:

• Deep hide (or allow it to create its own burrow)
• Minimal surface décor — it spends most time underground
• Shallow water dish

Lighting: Low light — prefers dark, secure environments

Once settled, expect to rarely see it — C. minax loves staying deep in its tunnels, especially during the day.

Feeding

Diet: Crickets, roaches, locusts

Feeding Schedule:

• Slings: 2–3x per week
• Juveniles: Weekly
• Adults: Every 10–14 days

Feeding Style: Explosive strikes! They are powerful and decisive hunters.

 Why Keep One?

One of the most iconic Asian tarantulas

Gorgeous velvet black coloration

Massive burrower with fascinating subterranean habits

A must-have for collectors who appreciate pure Old World attitude

Notes & Cautions

Highly defensive and reclusive — will threat pose and strike readily

Venom: Potent (Old World type) — medically significant

Handling: Strictly not recommended

Display: Low — typically a “pet hole,” but when visible, it’s stunning