Acanthoscurria Geniculata (Brazilian White Knee)

Acanthoscuria geniculata is a species of tarantula belonging to the family Theraphosidae, which is commonly known as the Brazilian whiteknee tarantula or the giant whiteknee tarantula. 

Acanthoscuria geniculata is a large and robust tarantula with a striking and beautiful coloration. The body length of an adult female can range from 5 to 6 inches (12 to 15 cm), while adult males are generally smaller, around 4 inches (10 cm) in length. Their legs are notably long and covered with a dense layer of tiny hairs, which contributes to their overall appearance. The carapace, or the hard shell-like covering on the front part of the spider's body, is dark brown to black, often with a glossy appearance. On the dorsal side of the carapace, there may be some light-colored patterns or markings. The abdomen is generally a bit lighter in color than the carapace, displaying a mix of black and brown shades with a white or cream-colored band stretching across the upper part of the abdomen, hence the common name "whiteknee tarantula." Acanthoscuria geniculata has eight legs, each covered in dense setae (hairs) that provide sensory information and help with movement. The legs have alternating bands of black and white, giving them a distinct zebra-like pattern. The white banding is particularly prominent on the third segment of the legs, which is where the common name "whiteknee tarantula" originates.

Acanthoscuria geniculata is native to the tropical rainforests of Brazil. They are ground-dwelling tarantulas, often found in burrows or crevices, where they create silk-lined retreats. These retreats serve as a safe place for the spider to rest and molt.