Tags: Arachnid.
Anelosimus terraincognita is a species of spider discovered in the Rijksmuseum van Natuurlijke Historie with no associated information as to its collector or location of discovery. Males have a corkscrew-shaped embolus which is a characteristic unique to Australasian species within the Anelosimus genus. It is known only from the holotype specimen which has a total length of 2.2 millimetres (0.087 in). It is named for the cartographic Latin phrase terra incognita meaning unknown land.