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.[citation needed] It was first described by Embrik Strand in 1907,[1][3] and is found in Tanzania.[1]
They are one of two tarantulas which females do not have a spermatheca, instead opting for oviducts and uterus externus.[4] Its carapace is a golden color, with a golden opisthosoma with a black fishbone pattern and spotting. The femur is a deep black color, with the rest of the legs being golden as most of the rest of the body.[citation needed]
They are found in the rainforests on the southern slopes of mount Meru in the Arusha Region.[4] The average temperature is 19°C, with average yearly rainfall of 1400mm.[5] They are usually found 2200 m above sea level,[4] a region that is home to plants such as Juniperus, Lobelia and Sedum.[6]
They are arboreal in nature, but also show burrowing tendencies, so they are sometimes confused as such. Most will try to flee at first, but persistent provocation may result in a bite or a threat pose. Their bite might be painful, as they probably have medically significant venom.[4]