Grammostola actaeon - Brazilian Woolly Black Tarantula
Grammostola actaeon - Brazilian Woolly Black Tarantula
Grammostola actaeon - Brazilian Woolly Black Tarantula
Grammostola actaeon - Brazilian Woolly Black Tarantula

Grammostola actaeon - Brazilian Woolly Black Tarantula

$2,350.00 
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Grammostola actaeon — Brazilian Woolly Black Tarantula

Grammostola actaeon, the Brazilian Woolly Black Tarantula, is another amazing beginner-friendly Grammostola with a look all its own. While Grammostola pulchra is famous for that smooth, velvet-black appearance, actaeon has a darker, fluffier, woollier look that makes it stand out immediately. This is a very rare and underrated Grammostola, and easily one of the more exciting black terrestrial species for collectors who love calm, hardy tarantulas with real presence.

Special Notices
Grammostola actaeon is one of the rarer Grammostola species out there, and it deserves way more attention. It has that classic hardy Grammostola personality, but with a heavier, darker, woollier appearance compared to its cousins. Brazilian Blacks are known for being smooth and velvety, while Brazilian Woolly Blacks are known for looking black, fluffy, and thick-coated.

This is an amazing species for keepers who want something beginner-friendly but still rare and collectible. They are sturdy, calm, long lived, and very rewarding to raise. If you already love Grammostola pulchra, Chaco Golden Knees, or Rose Hairs, this is a perfect next Grammostola to add because it gives you that same dependable feel with a much rarer look.

I keep them like a classic terrestrial Grammostola: good floor space, secure footing, a hide or starter burrow, and enough substrate to feel anchored. Keep conditions stable, avoid extremes, and this species does very well.

For care, setup, feeding, and show-and-tell videos to see how we keep and feed our tarantulas, check out my YouTube channel here: Urban Tarantulas on YouTube.
Care Details
🌡️ Temperature 75–85°F (24–29°C). Warmer temperatures usually mean faster growth because they molt more often, though Grammostola species are naturally steady growers.
💧 Humidity Moderate humidity works well. Keep babies and juveniles with a lightly moist area of substrate, keep larger specimens mostly dry with good ventilation, and avoid swampy or bone-dry extremes.
🏠 Housing
Babies 1–4 oz deli cup with needle ventilation and enough substrate to settle in or make a starter burrow. FREE container at checkout IF requested; not included otherwise.
Juveniles Use an enclosure about 2–3x the spider’s body size with good floor space, secure footing, a hide, and a slightly moist area of substrate.
Adults Adults do best in a roomy terrestrial enclosure with good ventilation, deeper substrate, a sturdy hide, and a water dish for larger specimens.
General Diet
🍽️ Crickets + roaches are the staple diet, including Dubia, Red Runner, and Lobster roaches. Babies take baby crickets or small roaches. If prey is too big, pre-kill it by crushing the head, leave it for the tarantula, then remove leftovers or bolus later. For super large specimens, an occasional pinky/hopper mouse or feeder lizard can be offered very sparingly; excess calcium can cause constipation/pooping issues. We never use pinhead crickets because they do not provide enough protein.
In-depth Facts
🕷️ Latin name / Scientific name Grammostola actaeon
📛 Common name(s) Brazilian Woolly Black Tarantula
🌡️ Temperature 75–85°F (24–29°C)
💧 Humidity Moderate; lightly moist area for babies and juveniles, mostly dry with good ventilation for larger specimens
📍 Locale Brazil and Uruguay region
🏷️ Category Terrestrial, heavy-bodied, calm, hardy, low to moderate webbing, occasional burrow use
📏 Size Females can reach about 5–6+ in DLS; males are usually smaller and leggier
🪶 Urticating hairs Yes, but they are generally calm and usually rely on their steady Grammostola temperament rather than acting defensive.
⏳ Growth rate Slow to medium; steady growth with consistent feeding and warm, stable conditions
🧭 Life span Females may live 20+ years; males mature sooner and live a shorter adult life
🍽️ Feeding Usually a reliable feeder once settled. Offer appropriately sized crickets or roaches and remove uneaten prey.
🎯 Recommended levels Anyone can own this species. It is a fantastic beginner-friendly Grammostola and an amazing choice for collectors who want a rarer, fluffier black tarantula with hardy care and classic terrestrial personality.
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Safety Disclaimer
Safety Disclaimer: Tarantula bites are extremely rare, and there are no recorded human fatalities. Venom strength varies by species; Old World tarantulas are usually more potent than New World tarantulas, with Poecilotheria known for especially strong venom. Larger tarantulas may also deliver more venom.

If bitten, stay calm. Most symptoms fade within minutes to hours, though potent species may cause discomfort for up to a week. In 13 years, I’ve only been bitten once, and symptoms were gone after one week.

Handling is at your own risk. I’m not responsible for bites or injuries. Always prioritize your safety and the tarantula’s well-being.