Encyocratella is a monotypic genus of Tanzanian tarantulas (family Theraphosidae) containing the single species, Encyocratella olivacea,[1] also known as the Tanzanian black and olive baboon spider.

[1] They are one of two tarantulas which females do not have a spermatheca, instead opting for oviducts and uterus externus.

[citation needed] They are found in the rainforests on the southern slopes of mount Meru in the Arusha Region.

[5] They are usually found 2200 m above sea level,[4] a region that is home to plants such as Juniperus, Lobelia and Sedum.

Most will try to flee at first, but persistent provocation may result in a bite or a threat pose.