This is the description of the Family Mantispidae in the online guide to the Neuroptera (lacewings and antlions) of southern Africa
The record for the above photo (by Ryan Tippett) can be found in LacewingMAP here.
•There are seven genera and at least 35 species in the region
•Most are found in the wetter eastern parts of South Africa
•Small to large sized (Wingspan 12-60 mm)
•Adults have raptorial forelimbs for capturing prey
•Adults are predatory and feed on other insects
•The larvae are parasitic & develop in the nests of spiders where they feed on the spiders eggs or on the young spiders