The Afrotropical species of the genus Pristaulacus Kieffer, 1900 are revised and illustrated for the first time. Four species are recognized: P. africanus (Brues, 1924), P. pilatoi sp. n. and P. thoracicus (Westwood, 1841), from the Republic of South Africa, and P. smithi sp. n. from Zimbabwe and Mozambique. P. thoracicus (Westwood), comb. n., is transferred from Aulacus Jurine. The previously unknown male of P. africanus (Brues) is described for the first time and additional data on the distribution of this species are given. A key to the species of Afrotropical Pristaulacus is provided.