Description of Discocriconemella uruguayensis n sp (Nematoda:Criconematidae)

A new species of Discocriconemella, collected from native forests in the central part of Uruguay from the rhizosphere of Populus sp. and unidentified grasses grown in an uncultivated habitat, is described. Discocriconemella uruguayensis n.sp. fails into ''group 4'' of Vovlas (1992), subdivision of the genus which contains other five species with a dorsally and ventrally indented, characteristic cephalic disc, showing paired dorsal and ventral projections. The new species is closely related to D. macramphidia De Grisse, 1967, but differs from it by having longer body (327-411 vs 280-320 mu m), shorter stylet (49-53 vs 57-65 mu m), and more body annuli (R = 107-117 vs 68-82), and in the absence of submedian lobes, which are very distinct in D. macramphidia.