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A dark brown Chaco golden knee tarantula with golden leg bands on bark chips.
Photo: PavelSI, Public domain, via Wikimedia Commons

Chaco Golden Knee Tarantula

Grammostola pulchripes

A large, dark brown South American tarantula with golden bands around its knees.

About the Chaco Golden Knee Tarantula

Chaco golden knee tarantulas live in grasslands of Argentina, Paraguay and Uruguay. They are dark chocolate brown with golden bands on their leg joints and a legspan of about 7 inches. They live in burrows and eat insects, other spiders and sometimes lizards or rodents.[1]

Quick facts

Scientific name
Grammostola pulchripes[1]
Size
Legspan about 7 inches.[1]
Lifespan
Females 20 to 25 years; males 5 to 10 years.[1]
Diet
Carnivore. Insects, spiders and sometimes lizards or rodents.[1]
Habitat
Grasslands, in burrows.[1]
Where it lives
Argentina, Paraguay and Uruguay.[1]
Group life
Solitary and shy.[1]
Babies
100 to 500 eggs in a silk egg sac.[1]
Conservation status
Not evaluated by the IUCN.[1]

Fun facts

  • Golden bands on its legs give it its name.[1]
  • Female Chaco golden knees can live 20 to 25 years.[1]
  • Tarantulas make no sounds and see poorly.[1]

Vocabulary

tarantula
A large, hairy spider.
urticating hairs
Itchy hairs a tarantula can flick at predators.
pedipalps
A pair of leg-like feelers near a spider's mouth.
venomous
Able to inject poison by biting or stinging.
arachnid
An animal with eight legs and two body parts, such as a spider or scorpion.

See it in person

These zoos had this animal when we gathered our information, but animals sometimes move. Check the zoo's website or contact the zoo before you visit.

Sources

  1. [1] Oakland Zoo. “Chaco Golden Knee Tarantula.” https://www.oaklandzoo.org/animals/chaco-golden-knee-tarantula/ (accessed 2026-10-02)

Facts last checked 2026-10-02.

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