Description of Filenchus polyhypnus and Malenchus andràssy (Nemata : Tylenchidae) From Sudan

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Ibnouf, A.A.
Zeidan, A.B.
Abdalla, S. A.
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Faculty of Agriculture, University of Khartoum, Shambat, Sudan
Filenchus polyhypnus is recorded for the first time in the Sudan. Members of this speices are characterized as short and rather thin nematodes, and tapering to elongate filiform tails, and straight to rather slightly ventrally arcuate bodies when relaxed, with finely striated cuticle. Both light and scanning electron microscopes showed two lines in the lateral field, and the amphidial apertures appear as distinct longitudinal arcuate slits. The female genital system is monodelphic, prodelphic, anteriorly outstretched with short post-vulval uterine sacs. The male has a short adnal bursa. The second species Malenchus andrássy Merny is also reported for the first time from Sudan. Members of this species are characterized by small, slightly ventrally arcuate bodies when relaxed. Cuticle is distinctly annulated and a lateral field with two lines is seen under light microscope, while the scanning electron microscope showed 5-6 faint lines and amphidial apertures appear as longitudinal sinuous slits. The female genital system is monodelphic, prodelphic and anteriorly outstretched with short post vulval uterine sacs. Males were not observed.
Page(s): 11 (3), 385-399, 25 Ref.