Two new species of the genus Viscosia de Man, 1890 (Nematoda, Enoplea, Enoplida, Oncholaimidae) from the intertidal zone of the Yellow Sea, China

Two new species of <i>Viscosia</i> from the intertidal zone along the Yellow Sea are described and illustrated. <i>Viscosiamedia</i> <b>sp. nov.</b> is characterized by a heavily cuticularized and relatively shallow buccal cavity with stubby teeth; cephalic setae 7-8 µm long; amphidial fovea invisible; slender spicules almost straight, cephalated proximally and conical distally; and tail conical, straight in males and slightly bent ventrally in females. <i>Viscosiasinica</i> <b>sp. nov.</b> is characterized by a relatively large amphidial fovea, conico-cylindrical tail with swollen horseshoe-shaped tip, spicules slightly curved ventrally, and 10-12 setae surrounding the cloaca, each 3-4 µm long. The basic morphological data of males of 26 valid species in <i>Viscosia</i> with a body length of 1-2.9 mm are presented.