HELICOTYLENCHUS FROM SUDAN, WITH DESCRIPTIONS OF TWO NEW SPECIES (NEMATODA: TYLENCHIDA)
Species of Helicotylenchus from Sudan are described. H. babikeri sp. n. has a unique head shape which is constricted behind the basal framework; also it has the smallest stylet ever recorded far the genus (16-17.5 µm). H. abuharazi sp. n. has a double row of oocytes in the elongate ovaries, a stylet 21-24 µm long, a short tail with a small, ventral, annulated projection. H. digitatus and H. microcephalus are recorded far the first rime from Sudano H. conicephalus, H. dihystera, H. egyptiensis and H. multicinctus have been recorded before.