The Pterinochilus murinus (TCF) – Usamburu Baboon is one of the most recognisable Old World tarantulas in the hobby. Native to East Africa, this terrestrial species is famous for its impressive webbing, lightning-fast movements, bold feeding response and stunning earthy colouration.

The TCF (Typical Colour Form) displays attractive shades of tan, bronze, gold and chocolate brown which help it blend perfectly into its natural environment. While it may not possess the vivid orange colours of some other locality forms, many keepers appreciate the more natural and rugged appearance of the TCF.

As spiderlings, they grow quickly and soon begin producing extensive sheets of webbing throughout their enclosure. Adults are enthusiastic excavators, often creating elaborate burrow systems hidden beneath dense layers of silk. In many setups, the enclosure becomes more of an art project than a display tank.

This species is renowned for its defensive nature. Unlike many New World tarantulas, P. murinus lacks urticating hairs and instead relies on threat postures, speed and potent venom as its primary defence mechanisms. While bites are rare when proper husbandry is followed, this is not a species suitable for handling.

For experienced keepers, however, the Usamburu Baboon offers everything many enthusiasts love about Old World tarantulas: striking appearance, fascinating behaviour, prolific webbing and a personality that guarantees no enclosure maintenance session is ever boring.

📋 Care Guide

🏷️ Scientific Name

Pterinochilus murinus (TCF)

🕸️ Common Name

Usamburu Baboon Tarantula

🌍 Origin

East Africa

📏 Adult Size

12–15cm (5–6 inches) leg span

⏳ Growth Rate

Fast

🏠 Lifestyle

Terrestrial / Opportunistic Burrower

😊 Temperament

Defensive, extremely fast, highly reactive

🌡️ Temperature

22–28°C

💧 Humidity

55–70%

🕳️ Substrate Depth

10–15cm minimum

🌿 Enclosure

Provide a well-ventilated terrestrial enclosure with deep substrate, a secure hide and plenty of anchor points for webbing. This species will often redesign its enclosure entirely to suit its own preferences.

🍽️ Feeding

An enthusiastic feeder that readily accepts appropriately sized crickets, roaches, locusts and other feeder insects. Growth can be rapid when fed consistently.

🕸️ Webbing

★★★★★

Expect extensive silk tunnels, sheet webbing and heavily decorated enclosures. One of the hobby’s most prolific webbers.

👀 Visibility

★★★☆☆

Visible when feeding or exploring, though many specimens spend significant time within their webbed retreats.

⭐ Experience Level

Advanced Keepers Only

💭 Final Thoughts

The Pterinochilus murinus (TCF) – Usamburu Baboon is a true classic of the tarantula hobby. It combines beautiful natural colouration, rapid growth, incredible web-building abilities and enough attitude to earn its legendary reputation.

It’s not a species for handling, and it certainly isn’t a beginner tarantula, but for experienced keepers looking for an engaging Old World species with plenty of character, the Usamburu Baboon delivers in spectacular fashion.

Fast. Fearless. Beautifully chaotic. Everything a classic baboon tarantula should be. 🕷️🔥