The ant-lions of southern Africa: genus Pamexis Hagen (Neuroptera: Myrmeleontidae: Palparinae: Palparini)

Pamexis Hagen, 1866, is revised. Myrmeleon luteum Thunberg is designated as type species. A key is provided for the five species comprising the genus. Pamexis luteus (Thunberg, 1784), P.bifasciatus (Olivier, 1811) and P.contaminatus (Hagen, 1887) are redescribed: P.karoo and P.namaqua are new species. All are endemic to the Cape Province of South Africa.