Tarantulas of the World

What are New World (NW) and Old World (OW) tarantulas?

This seems to be asked a lot in the tarantula community and a lot of people are actually shocked at how simple the answer is. New World Tarantulas are species originally discovered in North, Middle and South America. While Old World Tarantulas come from Africa, Asia, Australia and parts of Europe.

(OW) The cobalt blue tarantula (Haplopelma lividum)       (NW) The Mexican Flame Knee (Brachypelma auratum)

What are the differences between the two?

Most New World tarantulas tend to be much slower then their counterpart Old World Tarantulas. Of course there are some exceptions especially for certain Genus’ (example: Psalmopoeus and Ephepobus). As most spiderlings are fast the aforementioned Genus’ are particularly fast.

Most Old World Tarantulas are a lot different from (NW). They are by far faster in speed and if not handling properly will easily bolt away from you.

Defenses:

(NW) Tarantulas have a lot of weapons of attack before resorting to biting. It’s primary form of defense is it’s urticating hairs which they shake off from their abdomen or pedipalps (depending on the genus). These small fine hairs cause immense irritation if stuck on your skin, eyes or even inhaled. Should some get lodged into your eyes you should flush it with water or seek medical attention. You might also see them go into a threat posture if you disturb them too much or they need you to back off which usually consists of them raising their front legs showing their fangs. For some species of New World tarantulas they have a defense mechanism called the poop cannon (such as the avicularia genus), though not painful or venomous it certainly is uncomfortable to get pooped on. These are all mostly indications given to you by your New World tarantula to not bother him/her before they try biting which though not potent in venom is still painful.

(OW) Tarantulas tend to be very aggressive and fast. They mostly do not have urticating hairs or other forms of defense and rely heavily on their strong bite and potent venom. Because of their lack of defenses you should handle them with utmost care (though we do not recommend you handling them at all). When threatened they go straight into a defensive stance and some even make noises by exhaling through their mouths and it even sounds aggressive. You can easily get bit by one of these tarantulas before you can even react due to their hostile behavior and speed. Though there has never been a reported case of a death from a human due to tarantula venom some old world tarantulas have a venom potent enough to cause serious pains in addition to sending you to the hospital requiring medical assistance.

To generalize New World tarantulas are more docile then Old World tarantulas and easier to handle (of course there are some exceptions). All in all do your homework as best possible when choosing either a (NW) or (OW) tarantula as a pet. We do recommend you only acquiring an (OW) once you have become a more experienced hobbyist and not as your first tarantula.

The Mexican Redknee Tarantula is perhaps one of the most famous of all tarantulas. Used in movies, commercials, magazines and even newspapers due to its amazing colors. They originate from south-western Mexico and have become a very common New World tarantula kept as a pet. Once thought to be endangered its numbers have grown quite a bit, especially due to how easily these animals breed in captivity. Now they are one of the most sought after species and surely an easy find at any exotic expo throughout the world.

Habitat:

Being a native of the hills of the south-west Mexico these animals love the dryness the key is to keep your substrate relatively dry to replicate their arid environment in the wild. Make sure to at least refill your tarantula’s water dish once a week with fresh clean water and simply overfill it to dampen just a slight patch of your substrate. This should create adequate humidity for your tarantula. As always we would recommend a terrarium anywhere between 5 to 10 gallons depending on your tarantula’s size with about 2 to 3 inches of it filled with the substrate of your choice such as eco-earth. This species has been known to burrow so make sure to also add something it can use as housing such as half a florwepot into the substrate. You can add decorations such as plants to your enclosure but your redknee will not care for it.

Feeding:

Your Mexican Redknee Tarantula usually eats crickets and meal-worms but when big can even eat a cockroach or two. A full grown redknee will eat 1 or 2 large crickets a week but can sometimes go as far at 6 months without wanting to eat. As long as you see its abdomen remaining big in size you should not worry about it not eating. They are slow moving and most of the time will either strike fast as soon as you put a cricket in its enclosure or will not do anything at all. Do not leave the insect in the enclosure if you notice it not being eaten within 24 hours.

Attitude:

Though extremely docile the redknee does have some defenses when threatened. It’s a new world spider and therefor does come equipped with urticating hairs which it will flick off its abdomen should it feel intimidated. Should they feel vulnerable they also to rear up and show their fangs. So as always test the waters before trying to handle them to see what mood they are in. A simple approach would be to gently nudge it from behind with an elongated Q-Tip before trying to pick it up.

This tarantula is rather sluggish which makes it very easy to handle.  The Mexican Redknee tarantula is quite slow at growing. Mine grew from a 1 inch sling (spider-ling) to about 5 inches over the course of 5 years. The males will live a good 5 to 6 years while females can live upwards of 30 years with ease.  All in all we would recommend this as a first time beginner tarantula due to its low maintenance, being very submissive and also easy to handle.