{"refrec":{"BRefID":292942,"RR":"<b>Shi, B.; Xu, K.</b> (2018). Two new rapacious nematodes from intertidal sediments, <i>Gammanema magnum</i> sp. nov. and <i>Synonchium caudatubatum</i> sp. nov. (Nematoda, Selachinematidae). <i>Eur. J. Taxon. 405</i>: 1-17. <a href=\"https://dx.doi.org/10.5852/ejt.2018.405\" target=\"_blank\">https://dx.doi.org/10.5852/ejt.2018.405</a>","BEntID":284996,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Eur. J. Taxon. 405</i>: 1-17. <a href=\"https://dx.doi.org/10.5852/ejt.2018.405\" target=\"_blank\">https://dx.doi.org/10.5852/ejt.2018.405</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Shi, B.; Xu, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Shi, B.; Xu, K.","Englishabstract":"Two new species of the family Selachinematidae Cobb, 1915 from an intertidal sandy flat in the East China Sea are described. Both species are distinct rapacious nematodes, preying on other nematodes. <i>Gammanema magnum</i> sp. nov. is characterized by its leaf-like labial setae, large loop-shaped amphideal fovea in the male and small spiral ones in the female, an anterior buccal cavity reinforced by 12 rhabdia, each rhabdion with about six denticles, and two unequally long spicules. <i>Gammanema magnum</i> sp. nov. is a striking species, exhibiting extreme sexual dimorphism in the amphideal fovea, but lacking a gubernaculum or precloacal supplements, all features by which it can be differentiated from congeneric species. <i>Synonchium caudatubatum</i> sp. nov. is characterized by a posterior buccal cavity, with three mandibles each with a large tooth flanked by three smaller teeth on both sides, a transverse oval-shaped multispiral amphideal fovea, and a bluntly rounded tail with a protuberant caudal duct. <i>Synonchium caudatubatum</i> sp. nov. is unique in the genus in having a protuberant caudal duct in the tail end. Furthermore, it differs from its congeners by its mandibles, which have seven teeth each. <i>Synonchium caudatubatum</i> sp. nov. lacks a gubernaculum and a precloacal supplement, both features present in congeners except <i>S. depressum</i> Gerlach, 1954.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Two new rapacious nematodes from intertidal sediments, <i>Gammanema magnum</i> sp. nov. and <i>Synonchium caudatubatum</i> sp. nov. 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