SOME CEPHALOBIDAE (NEMATODA: RHABDITIDA) FROM SAND ON THE ISLAND OF SAMOS, GREECE BY SVEN BOSTRÖM Zoo-tax, Swedish Museum of Natural History, Box 50007, 104 05 Stockholm, Sweden Samples of sand from Samos, Greece, yielded some species of the family Cephalobidae (Rhabditida). A second species of Heterocephalobellus, H. potamiensis n. sp., is described. It is dis- tinguished from the type species of the genus by a longer body in both sexes, a more posterior position of excretory pore, a longer post-uterine branch, longer spicules and gubernaculum, and male tail shorter and differently shaped from female tail. The female of Ypsylonellus devimucronatus was found and because of its cephalic organisation it is transferred back to the genus Cervidellus. Other species recorded are Cervidellus neftasiensis and Acrobeles singulus. Keywords: Acrobeles, Cervidellus, Heterocephalobellus, Ypsylonellus, morphology, taxonomy, SEM. Samples taken from a beach on the island of Samos, Greece in 1989, were found to contain a new species of the genus Heterocephalobellus Rashid, Geraert & Sharma, 1985, one species of Ypsylonellus Andrissy, 1984, one species of Cer- videllus Thorne, 1937 and one species of Acrobeles von Linstow, 1877, which are all described below. Some other rhabditids have previously been described from Samos by
Nematologica – Brill
Published: Jan 1, 1991
Keywords: Acrobeles; SEM; morphology; Cervidellus; Ypsylonellus; Heterocephalobellus; taxonomy
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