Members of the family Solpugidae occur throughout Africa and are known
also from Iraq. The 200 known species are distributed among 23
genera. The genus Ferrandia is placed in its own subfamily Ferrandiinae.
The genera Metasolpuga, Oparba, Oparbella, Prosolpuga,
Solpuga, Solpugassa, Solpugeira, Solpugella,
Solpugema, Solpugiba, Solpugista, Solpugisticella,
Solpuguna, Solpugyla, Zeria, and Zeriassa are
placed together in the subfamily Solpuginae.