Josh's Frogs LogoJosh's Frogs Logo

Josh's Frogs

Flash sale! 40% off Keepers' Choice Crested Geckos. Ends September 25th @ 11:59 ET.

Fall sale
HomeAny CategoryLive InsectsPet InsectsMexican Flame Knee Tarantula - Brachypelma auratum | 3/4 inch (Captive Bred)

Mexican Flame Knee Tarantula - Brachypelma auratum | 3/4 inch (Captive Bred)

Out of Stock


0.0 out of 5 stars


About This Product

Defining Characteristics:

  • One of the more uncommonly offered Brachypelma species, these guys can tend towards the defensive, being common hair-flickers.
  • These spiders stand out from the Red Knee species - their red markings are only on one joint segment of the leg and almost looks embroidered on.
  • Great species that likes to stay in the open as adults, making a lovely and well tempered display spider

Name: The Brachypelma auratum is commonly known as the Mexican Flame Knee. Its scientific name has Greek and Latin roots meaning "short sole of the foot" and "airiness” or “glowing."

Enclosure Size & Setup: This is a terrestrial species. Surface area of the enclosure should be no less than two times the spider's diagonal leg span in one direction, and three times the diagonal leg span in the other. The enclosure should be tall enough to accommodate 2-3 inches of substrate for slings and 4+ inches for adults. Appropriate substrates include ABG mix, Dig-It, or coco cradle.

Never allow your terrestrial spider more than two times their diagonal leg span as head space above their substrate as a fall from any higher could be catastrophic.

Temperature Range (°F): Ideally kept in the mid 70° range with a bit of wiggle room in either direction. Temperatures consistently below 65° or above 85° should be avoided.

Humidity: 60-70%. Slings should stay on lightly moist substrate. Adults should have a water dish and a corner of their enclosure that goes through a wet/dry cycle, moistening the substrate and then leaving it alone until it dries out.

Size: Specimens sold by Josh's frogs will be at least 3/4-1 inch at time of sale. Adults can reach up to a 6 inch diagonal leg span.

Age: B. auratum babies sold by Josh's Frogs are at least 2-3 months old. Males reach 4-5 years, with females drastically outliving them at 20+ years.

Feeding: At time of sale they are eating 3-4 hydei fruit flies once a week. Food items should be about the size of the spider's carapace. 

Older spiders can eat less frequently, with adults eating every 10-14 days.

Never attempt to feed a freshly molted tarantula less than a week after their molt to prevent injury to the spider.

Sexing: Specimens of 2.5-3 inch 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.

Due to their age, B. auratum spiderlings sold by Josh's Frogs  are sold as unsexed animals.

Coloration/Patterning: Slings are light brown, growing to a velvety black with white banding and fire engine red markings on their legs.

Social Behavior: Brachypelma auratum are not social creatures and any attempt to cohabitate will likely result in cannibalism.

Breeding: Spiders, for breeding purposes, should remain supervised when together and should only be attempted when they’re 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 less than receptive.

Natural Range: Parts of Central America and Mexico.

History in the Hobby: Red Rumps have been established as an exotic species in Florida due to either accidental or intentional releases by pet owners.

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 Mexican Flame 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.

Customer Reviews

0.0 out of 5 stars

Review data

5 star reviews


4 star reviews


3 star reviews


2 star reviews


1 star reviews



There are currently no customer reviews.