Grammostola pulchripes

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Grammostola pulchripes

One of the larger species of tarantula, the Chaco golden knee (Grammostola pulchripes), formerly known by Grammostola aureostriata, can be expected to reach between 20–22 cm (8.5 in). The Chaco Golden Knee tends to be one of the more docile and calm species of tarantula and therefore makes an attractive first pet.

The Chaco is an opportunistic burrowing terrestrial tarantula: they tend to burrow while younger and adopt a pre-existing hide as its home when it begins to mature. It is quite flashy in appearance, bearing long light-colored hairs all over its body and gold stripes on its legs, particularly at the “knees”. This is a good display species as it often sits in plain view. When it was first imported into the pet trade, it was thought to be a variant of the Pink zebra beauty species, but it is significantly larger and can easily be distinguished by those familiar with both species.

Scientific classification

  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Arachnida
  • Order: Araneae
  • Suborder: Mygalomorphae
  • Family: Theraphosidae
  • Genus: Grammostola
  • Species: G. pulchripes
  • Binomial name: Grammostola pulchripes


Grammostola climate is tropical. Average temperature in Asansiyans is approximately 27 ° C (approximately 80 ° F) in January from approximately 17 ° C (approximately 63 ° F) in January. In northern temperatures, the chalk and other points are 38 ° C (100 ° F). Annual rainfall averages approximately 1,120 mm (44 in) in the region of Assension, some 815 mm (32 inches) in Gran Chano and 1,525 mm (60 inches) in the areas of the eastern forest. In summer the chances are heavy rainfall and there is almost no rain in the winter.

Natural Habitat

The Chaco Golden Knee tarantulas are known to inhabit the grasslands of Argentina and Paraguay. As such, they are adapted to generally warm climate, with alternating dry and rainy seasons.


The female of the species can live up to the grand old age of 20 years old and maybe more if well cared for. Thus this needed to be taken into consideration by a potential owner. The male having a much shorter life span of around five years. In their natural habitat is it not known how long their lifespan is.


Slings can be fed a pinhead cricket or baby roach twice (or more often if desired) a week. As your tarantula grows, its prey should also grow with it. A good sized pray would be a prey roughly the same size as the tarantula’s abdomen. Enclosures shouldn’t be permitted to dry out. Your tarantula needs the humidity to keep its lungs clean and to help it breathe. Use a spray bottle and lightly mist one side of the enclosure.

Be sure that the other half is dry, and be sure not to hit the tarantula when you are misting as this will only annoy them. Smaller slings will drink from the substrate or from dews forming as the water condenses. Larger slings will need a small and shallow water dish, be sure that the water dish will not be easily flipped over.

An obligatory rock or stones should be in the middle of your dish, so in the likelihood that your tarantula falls, it will have something to climb on to to avoid drowning. A water dish should always have clean water. Uneaten prey (for more than 24 hours) should be taken out, as well as insect shells and leftovers (food boluses/balls) to avoid mold and attracting mites.


They are known as being extremely docile and slow moving however with that being said they do know how to defend themselves. Being a new world tarantula they come equipped with urticating hairs on their abdomen which they will use should they feel threatened. Worst case scenario they might bite which can consist of a “dry” bite or “wet” bite. A dry bite does not contain venom but still causes some pain especially from a full grown tarantula that has bigger fangs.

You can also experience a wet bite which on top of getting the pain from a dry bite would also have the tarantula’s venom. Though its not potent enough to be considered a medical threat it does sting a bit and can cause light headaches or muscle cramps. If you think you might be allergic you should seek medical attention.

Grammostola pulchripes images

Image by 251206 from Pixabay

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