New and little known Laimydorinae species from Fynbos in the south-western Cape (Nematoda: Dorylaimidae)

Calcaridorylaimus sirgeli n.sp. is described from Cape Fynbos in mountains in the south-western Cape Province. It differs from all known species in the genus by the presence of advulval ornamentation, and is compared in detail with Calcaridorylaimus signatus (Loof, 1975) and Calcaridorylaimus ruwenzorii (De Coninck, 1935). A single specimen of Drepanodorylaimus williamsi (Heyns & Kruger, 1983) is compared with specimens from the Transvaal and Mauritius. Mesodorylaimus sp. ct. graciosus Andrassy, 1986 is reported from South Africa for the first time.