Olios is the largest genus of huntsman spiders, containing 166 species.

[1] They are found throughout the world, with most species occurring in hot countries.

[1] They are small to large Sparassidae, that have eight eyes in two partially straight rows.

Most larger species are darker, and some members of this genus may also be green.

[2] As this genus is widespread, they are found in a large variety of habitats, from savannahs to rainforest.