Stegodyphus sabulosus is a species of spider in the family Eresidae. It is found in Kenya, Tanzania, Eswatini, and South Africa, where it is commonly known as the dark Stegodyphus velvet spider.
Stegodyphus sabulosus is found in four African countries: Kenya, Tanzania, Eswatini, and South Africa. In South Africa, the species is recorded only from Kruger National Park at Nwambiya Pan in Limpopo province.
The species has been sampled from the Savanna biome at altitudes ranging from 319 to 418 m above sea level.
Stegodyphus sabulosus constructs retreat-webs on vegetation.
Stegodyphus sabulosus is known only from the female.
Stegodyphus sabulosus is listed as Least Concern by the South African National Biodiversity Institute due to its wide geographical range. It is protected in Kruger National Park.
The species was originally described by Albert Tullgren in 1910 from Tanzania. It was revised by Kraus & Kraus in 1989.