Some species of Helicotylenchus Steiner, 1945 from South Africa (Nematoda : Hoplolaimidae)
1998; Brill; Volume: 21; Issue: 4 Linguagem: Inglês
ISSN
1164-5571
Autores Tópico(s)Nematode management and characterization studies
ResumoSummary - A rotai of 49 populations of the genus He/icoly/enchus Steiner, 1945 from various localities in South Africa were studied. H. de/anus sp. n., col1ected from the rhizosphere of Pinus panda is described. The species is characterized by the poste rior position of the vulva CV = 73-76%), reduced posterior genital branch (25-44 ~m), and position of phasmids (five annuli posterior ro anus) in females and by body length (497-629 ~m), position of excrerory pore (85-94 /lm from anterior end), stylet length (22-26 /lm), spicule length (18-23 /lm), and gubernaculum length (6-8 ~m) in males. H. krugeri Van den Berg & Heyns, 1975 is synonymized with H. martini Sher, 1966. H. paracana/is Sauer & Winoro, 1975 and H. variabi/is Philips, 1971 are new recorctings for South Africa. The male of H. indicus Siddiqi, 1963 is described for the first time and H. brevis (Whitehead, 1958) Fortuner, 1984, H. exallus Sher, 1966, and H. vu/garis Yuen, 1964 are redescribed. © OrstomlElsevier, Paris
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