Acanthoscurria geniculata

Adult Size: 18cm to 20cm
Type: New World, Terrestrial
Growth Rate: Fast
Temperament: Bold to defensive
Lifespan: Females (18 to 20 years) | Males (3 to 4 years)
Origin: Brazil

Scientific Name: Acanthoscurria geniculata
Common names: Giant White Knee, Brazilian White Knee, White Banded Birdeater

Acanthoscurria geniculata is a well-known tarantula species and a popular choice among hobbyists looking for a good display specimen. They’re always out when your friends arrive, and they’re voracious eaters who grow relatively quickly between molts given their size. Seeing a fully grown specimen up close is nothing short of amazing, with its striking black and white leg striping catching the eye right away.

They reach a formidable size of around 20cm (8in) in length. Acanthoscurria geniculata become more assertive as they grow larger. They don’t scare easily, and you’ll have to annoy them a lot before they start flicking urticating bristles or becoming defensive. You’ll notice that they frequently stand firm and confront whatever is bothering them. If you use large tweezers or another tool to nudge a fully grown specimen along during maintenance, don’t be surprised if it spins around and grabs it.

This species is quite formidable when fully grown. Because a fully grown female can easily lift the lid of her enclosure if she can get her fangs under it, you should make sure that their enclosures close and latch properly.

Breeding this species is simple, and they don’t require any special treatment to induce egg laying other than maintaining a constant humidity of 80 percent or slightly higher. Females can be very aggressive towards males during mating, and you will have a hard time protecting him if she chooses to attack due to her sheer strength. Stay close with a tool you can use to protect the male during mating, such as your tweezers or a 30cm ruler, and stay alert at all times.

At around 6 weeks after the egg sac is produced, you can pull it away from the female for manual incubation. An egg sac can hold up to 500 eggs, and in some cases, even more.



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