Burrowing Behemoth: Secrets of the King Baboon Spider

Pelinobius muticus, commonly known as the King Baboon Spider, is a fascinating and formidable tarantula species. Here’s a detailed look at its characteristics, behavior, and care:  

Scientific Classification and Origin:

  • Scientific Name: Pelinobius muticus  
  • Genus: Pelinobius  
  • Family: Theraphosidae
  • Origin: East Africa, primarily Tanzania and Kenya.  
  • Notably, the Pelinobius Genus is monotypic, meaning that Pelinobius muticus is the sole species within that Genus.  

Physical Characteristics:

  • This tarantula is one of the larger Old World species, boasting a leg span that can reach up to 9 inches (approximately 23 centimeters).  
  • It has a robust and heavy build, well-adapted for its burrowing lifestyle.  
  • Its coloration is typically a rusty brown to orange, giving it an earthy and camouflaging appearance.  
  • A notable feature is its stout hind legs, designed for efficient digging.  

Behavior and Temperament:

  • Pelinobius muticus is known for its highly defensive nature.
  • Unlike some tarantulas, it lacks urticating hairs (defensive hairs), relying instead on its potent venom and a strong bite.  
  • A key defensive mechanism is stridulation, where it produces a hissing sound by rubbing its legs together.  
  • It is a fossorial species, meaning it spends the majority of its life in deep burrows.  
  • They are generally nocturnal hunters.

Habitat and Burrowing:

  • This species inhabits the dry scrublands and savannas of East Africa.  
  • It constructs elaborate burrows that provide protection from predators and the harsh environment.  
  • These burrows can be quite extensive, creating complex tunnel systems.  

Care in Captivity:

  • Pelinobius muticus is generally considered an advanced tarantula species, not recommended for beginners.
    • They require a deep substrate to facilitate their burrowing behavior.
  • * Care must be taken when maintaining them, due to their defensive nature and powerful bite.
    • Because they are an Old World Tarantula, bites from them can cause more intense pain than that of New World Tarantulas.
  • They are slow-growing, which means patience is required when keeping this species.
    • They require dry substrate conditions.
    • Ventilation is also very important.
    • Providing a place for them to burrow is of the upmost importance.

Key Considerations:

  • Due to their defensive nature, handling is strongly discouraged.
  • Their potent venom can cause significant pain.  
  • Their slow growth rate requires long-term commitment from keepers.  
  • * Breeding can be difficult.  

Pelinobius muticus, or King Baboon Spider, is a remarkable tarantula species with unique characteristics and behaviors. While it presents challenges for keepers, it is also a fascinating subject of study and observation for those with the appropriate experience.


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