red trapdoor spider

Stasimopus robertsi is found in South Africa. The species occurs in Gauteng province around Pretoria, including Faerie Glen Nature Reserve, Hatfield, and Magaliesberg at Wonderboom Poort.

The species is a ground dweller that lives in burrows usually made in hard, bare ground, sometimes associated with grass under rocks. The burrow is closed with a lid 6 mm thick with distinct pits on the lid. The burrow is vertical with width at top 25 mm and width at bottom 28 mm. Males have been collected from burrows with lids that closely resemble those of the female, but smaller. The species has been sampled from the Grassland and Savanna biomes at altitudes between 1,213-1,692 m above sea level.

The species is named after A. Roberts, who collected specimens for the original description along with G.P.F. van Dam of the Transvaal Museum.