Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula
Grammostola iheringi - Entre Rios - Largest Beginner Tarantula

Grammostola iheringi - Entre Rios - Largest Beginner Tarantula

$2,200.00 
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Grammostola iheringi — Entre Rios Tarantula

Grammostola iheringi, the Entre Rios Tarantula, is a rare, impressive, and incredibly underrated Grammostola with size, color contrast, and a calm personality. This species is very similar in attitude to Grammostola actaeon, but the big difference is size and color: iheringi is one of the largest Grammostola species, possibly the largest, and it keeps a beautiful reddish abdomen instead of turning fully black at maturity like actaeon.

Special Notices
Grammostola iheringi is also rare, and like Grammostola actaeon, it is a super nice, docile, hardy species that deserves more attention. The major difference is that iheringi is one of the largest Grammostola species out there, if not the absolute largest, making it a standout choice for keepers who want that calm Grammostola personality with serious size.

Another thing that makes this species distinct is the abdomen color. Grammostola actaeon tends to become more fully black as it reaches sexual maturity, while Grammostola iheringi keeps a reddish abdomen, giving it beautiful contrast against the darker body and legs. If you want more color contrast, rarity, calm behavior, and size, this is an amazing species to own.

I keep them like a classic large terrestrial Grammostola: good floor space, secure footing, plenty of substrate, and a sturdy hide or starter burrow. They are usually calm and steady, but because they can become very large, I always give them a setup that supports their weight and lets them feel secure.

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 need a roomy terrestrial enclosure with excellent floor space, deeper substrate, a sturdy hide, good ventilation, 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 iheringi
📛 Common name(s) Entre Rios Tarantula, Brazilian Giant Blonde 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, Uruguay, and Argentina region; Entre Ríos is commonly associated with this form in the hobby
🏷️ Category Large terrestrial, heavy-bodied, calm, hardy, occasional burrow use, low to moderate webbing
📏 Size Females can reach roughly 7–8+ in DLS and may be one of the largest Grammostola; males are usually smaller and leggier
🪶 Urticating hairs Yes, but they are usually calm and docile like actaeon, relying more on their steady Grammostola temperament than defensive behavior.
⏳ Growth rate 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 strong, reliable feeder once established. Offer appropriately sized crickets or roaches and remove uneaten prey.
🎯 Recommended levels Anyone can own this species. It is an amazing Grammostola for keepers who want rare, docile behavior like actaeon, but with more size, more contrast, and that beautiful reddish abdomen that stays colorful into maturity.
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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.