Neothada hades n.sp. from South Africa, with notes on the genus and a key to the species (Nematoda: Tylenchidae)

Neothada hades n.sp. from South Africa is characterized by the posession of small but distinct stylet knobs, 149-175 body annules intersected by 14 longitudinal lines (incisures), protruding lateral fields marked by four incisures, and an elongate-conoid tail with bluntly rounded tip. Reasons are given why N. canceflata (Thorne 1941) and N. tatra (Thorne & Malek 1968) are regarded as two distinct species, and why N. cancel/ata apud Andrassy, 1982 is regarded as distinct from Thorne's species. Andrassy's species is renamed N. andrassyi n.sp. A key is presented for the six recognized species of Neothada.