Xerophaeus phaseolus is a species of spider in the family Gnaphosidae. It is endemic to South Africa.
Xerophaeus phaseolus is endemic to the Western Cape.
The species inhabits multiple biomes including Fynbos, Succulent Karoo, and Thicket biomes at altitudes ranging from 3 to 588 m above sea level. Xerophaeus phaseolus are free-living ground dwellers.
Xerophaeus phaseolus is listed as Data Deficient for taxonomic reasons, though it has a wide geographical range. The species is protected in De Hoop Nature Reserve and Swartberg Nature Reserve. There are no significant threats.
The species was originally described by Tucker in 1923 from St Helena Bay, Steenberg Cove. The species has not been revised and is known only from the female.