Grammostola pulchripes (Chaco Golden-knee) Tarantula

Grammostola pulchripes, known as the Chaco Golden Knee Tarantula, is a large, striking, and exceptionally docile terrestrial species native to the grasslands and scrublands of Paraguay and northern Argentina. This species is easily recognized by its dark chocolate-brown to black body adorned with brilliant golden stripes along the femurs and knees, giving it a regal, high-contrast appearance. In the wild, G. pulchripes inhabits open plains and savanna edges, constructing burrows or utilizing natural cavities in compact soil where temperature and humidity remain stable below the surface. It is a patient ambush predator and among the calmest tarantulas known—ideal for display and educational settings. Slow-growing but long-lived, females may exceed 20 years in captivity and reach impressive size with steady husbandry. In captivity, this species thrives in enclosures with deep, slightly dry substrate, low-to-moderate humidity, and good ventilation—rewarding keepers with visibility, beauty, and a gentle temperament.

• Scientific Name: Grammostola pulchripes

• Common Name: Chaco Golden Knee Tarantula

• Adult Leg Span: 7–8 inches

• Country of Origin: Paraguay, Argentina

• Habitat: Subtropical Grassland and Thorn Scrub (200–800 m elevation); compact clay and sandy soils with sparse vegetation, ambient temperatures 74–84°F, relative humidity 60–70%, with distinct wet and dry seasonal cycles

• Habits: Terrestrial / Burrowing

• Growth Rate: Slow to Moderate