However, a number of spider and even scorpion species seems to have adapted perfectly to this biotope and are commonly found in urban and suburban areas. There are even some species that would never have been so numerous and widespread if it were not for cities.
Of the arachnids spiders are especially commonly found in and around houses. They play an important role in gardens as control agents of garden pest species. Because of their abundance in urban and suburban areas surveys of this areas form an important part of the SANSA surveys.