Desidae is a cosmopolitan family represented by 60 genera. Only two species are known from South Africa. For years only a single species was known from South Africa Desis formidabilis (O.P. Cambridge, 1890). They are intertidal hunters and are always found in areas with a rocky shore. They are found between the lowwater neap and high-water neap tide levels. The species is known from South Africa to Namibia and due to its wide range it is listed as Least Concern. A second species, Badumma longinqua L. Koch (1867) known to be invasive was only recently reported from South Africa from two localities. It is an invasive species and recorded from several continents. Due to wide range listed as of Least Concern.