SOME CEPHALOBIDS FROM TURKEY (NEMATODA: RHABDITIDA)

Abstract

Three cephalobid species, found in soil samples from Turkey and not previously reported from that country, were studied by LM and SEM, which provided some additional information on their morphology. For Acrobeloides tricomis, ranges of measurements and ratios are extended. Eucephalobus oxyuroides specimens were found to possess six separate lips in agreement with the diagnosis of the genus. Specimens of some populations of E. oxyuroides and other species of the genus have duplex lips and labial probolae. This variability is an obstacle for identification and calls for a revision of the genus. The cephalic organisation of Ypsylonellus devimucronatus is described and is found to be similar to species presently placed in other genera, which calls for a revision of the genera Cervidellus, Stegelletina and Ypsylonellus.