The Acanthoscurria geniculata, commonly known as the Brazilian Giant White Knee, is a popular terrestrial tarantula favored in the UK for its striking black-and-white leg bands and impressive adult size.
 
Species Profile
Size: One of the larger "New World" species, reaching a leg span of 18–22cm (7–8+ inches).
Growth Rate: Known for a very fast growth rate, often reaching significant size within 2–3 years.
Temperament: Generally considered bold and voracious. While not typically aggressive, they have a heavy feeding response and may kick urticating hairs if threatened.
Display Value: They are highly active and rarely hide, making them excellent display animals. 
 
Care Requirements
Enclosure: Minimum size of 45 x 45 x 30cm for adults, with deep substrate for burrowing (approx. 10–15cm).
Temperature: Prefers 22–26°C (71–78°F).
Humidity: Requires high humidity of 70–80%, achieved through regular misting and a shallow water dish.
Diet: Extremely opportunistic; they will eat crickets, roaches, locusts, and mealworms.