One new species of free-living marine nematode from the Yellow Sea, China Author Hao, Yingdong College of Life Sciences, Liaocheng University, Liaocheng 252059, P. R. China. Author Hu, Quanan College of Life Sciences, Liaocheng University, Liaocheng 252059, P. R. China. Author Huang, Yong College of Life Sciences, Liaocheng University, Liaocheng 252059, P. R. China. text Zootaxa 2021 2021-07-12 4999 3 273 278 journal article 10.11646/zootaxa.4999.3.6 1175-5326 5119088 0A625587-3059-4974-AEEB-93ABAF7D838A Genus Setostephanolaimus Tchesunov, 1994 Diagnosis. Cuticle annulated, annules without ornamentation. Outer labial sensilla setiform. Subcephalic setae present. Amphideal aperture ventrally unispiral or a transverse oval slit. Buccal cavity funnel-shaped. Number of tubular supplements varies from 7 to 26. Spinneret large and strongly cuticularized ( Holovachov, 2014 ).