Two new species of Trichodorus from South Africa, with a note on T. petrusalberti (Nemata: Trichodoridae).

Two new species of the genus Trichodorus are described from South Africa. Trichodorus magnus n. sp. is characterized in males, by the presence of one medioventral cervical papilla, shape of spicules (stout with indentation) and non-thickened terminal cuticle; in females, by the shape of the vaginal sclerotizations, the pore-like vulva in ventral view and a pair of postadvulvar sublateral body pores and in both sexes by the long body and long onchiostyle (62.5-71 mum). Trichodorus kilianae n. sp. is characterized in males by presence of a single cervical medioventral papilla, a non-thickened terminal tail cuticle and shape of spicules (slender, with septum in front of a clear but irregular indentation); in females by small vaginal sclerotizations and pore-like vulva in ventral view and in both sexes by a slender and long body, onchiostyle length of 45-49 mum and anterior position of the excretory pore. For the first time an inner stylet was observed in adults of a Trichodorus species : T. petrusalberti De Waele, 1988. Additional details are given for T petrusalberti.