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HomeAny CategoryLive InsectsPet InvertebratesBrazilian Giant White Knee Tarantula - Acanthoscurria geniculata - 1 inch (Captive Bred)

Brazilian Giant White Knee Tarantula - Acanthoscurria geniculata - 1 inch (Captive Bred)

$44.99 $59.99

5.0 out of 5 stars


Quantity Available: 6

About This Product

SPECIAL NOTE: USPS forbids shipping venomous spiders or scorpions in the mail.

Because of this, we ship these animals FedEx priority overnight for a flat fee of $39.99.


  • A favorite in the hobby, these gorgeous spiders can reach up to 8” diagonal legspan.
  • Excellent display species that quite often sits out in the open.
  • Very hardy species able to withstand temperature and humidity fluctuations
  • Well known for their voracious and dramatic appetites, feeding time for these spiders will not be a bore.

The Acanthoscurria geniculata is most commonly known as the Brazilian Giant White Knee. The scientific name has Greek and Latin roots meaning “clownish” and “thorn”  and “knotty”.

Enclosure: The length and width should both be at minimum three to four times the spider's diagonal leg span. The enclosure should be tall enough to accommodate at least 2-3 inches of substrate for babies, with adults preferring closer to 5 inches for burrowing. There should be no more than two times the diagonal leg span of the spider for head space, as anything higher risks injury to your spider should it climb and fall.

Want to spice up your enclosure with live plants? Our experts have curated kits of easy-to-care-for and SAFE plants for your tarantula. Check them out here!

Temperature:  72°-80° with the natural range averaging 77°. Temperatures above 90° or consistently below 65° should be avoided due to risk of long term health issues or death.

Humidity: 65%-75%, easily achieved by overflowing the water dish and allowing that section of substrate to dry out some of the way before doing so again. Depending on location and/or season a supplemental misting 1-2x a week may be necessary due to extremely dry conditions.

Size: At Josh's Frogs our A geniculata slings are about 1" diagonal leg span at time of sale. They average 7”-8” as adults.

Age: All of our A geniculata slings are at least 2-3 months old. Females average a lifespan of 15-20 years, while males can be expected to last 3-5 years.


Feeding: At time of purchase they are consistently feeding on 3-6 D hydei fruit flies once a week. As they grow they will only require weekly feedings, with full grown adults will eat up to two dubia roaches, one orange head roach, 3 superworms or several large crickets a week. They are fantastic eaters and will seldom turn down a bug except in premolt or directly after a molt. Do not attempt to feed for at least one week after a molt.

Sexing: Due to age, A gniculata spiderlings sold by Josh's Frogs are sold as unsexed. Specimens of 2.5"-3" diagonal leg span will be able to start being accurately sexed. The most accurate method is always molt sexing, the molt of a female tarantula of appropriate size will have spermatheca and a uterus externus in between the top two sets of book lungs that will appear as a "flap" that will catch and open if a pin is gently run down this section of the old exoskeleton. Males will have a much more plain slit that will not budge with attempts to manipulate it.

Color: Spiderlings are light brown, as they molt gradually getting their signature white leg banding and striping. Adults are a dark brown/black with red setae on the abdomen.

Social Behavior: A geniculata are by no means social creatures and any attempts to cohabitate will likely result in cannibalism.

Breeding: Spiders for breeding purposes should remain supervised when together and should only be attempted well fed. Mature males can be put in the enclosure of a mature female for courtship/mating. Remove male promptly after insertion is observed, or immediately if female is aggressive rather than receptive.


Natural Range: They come from largely northern Brazil with some populations scattered throughout most tropical areas of the country.

Links of Interest:

  • Arachnoboards: a community of spider enthusiasts that will be able to or have already answered almost any question you can think of with regards to tarantulas.


Still not sure if the Brazilian Giant White Knee tarantula from Josh's Frogs is the right pet bug for you? Read the reviews below and see what other customers are saying!



After placing an order containing a live animal, you will receive a scheduling email containing our JotForm scheduling link to schedule your new pet's delivery date.

With this scheduling link, you will be able to schedule your order's delivery up to 30 days in advance. You will be able to choose a date of delivery for Tuesday-Saturday (Saturday arrival depends on the carrier's service availability) with the estimated time of arrival generally being 12pm, or 4:30pm for more rural areas. Overnight lows must be above 40°F to ship directly to you (or above 30°F for FedEx Ship Center pickups) as well as below 90°F by estimated time of arrival.

If you require further assistance, or prefer to talk to one of our Customer Service agents, please feel free to reach out to our [email protected] email or our phone line 1-800-691-8178.

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5.0 out of 5 stars

Excellent service

This was my first purchase and I was expecting the normal packing for my sling and wow was I surprised! They came well packed and the dram vials didn't have the normal paper towel instead it had moss in there and that kind of care and attention for the animals safety makes Josh"s frogs a 5 star business!

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