A NEW SPECIES AND A NEW RECORD OF THE GENUS SIPHONOLAIMUS (NEMATODA, MONHYSTERIDA) FROM THE YELLOW SEA AND THE EAST CHINA SEA, CHINA

A new species of free-living marine nematode of the genus Siphonolaimus, S. boucheri sp. nov. from the Yellow Sea is described and illustrated. This new species is characterized by the short spear (21-23μm), head diameter 10-11μm, amphids circular, 13μm in diameter or 59% of corresponding body diameter; short spicules (61-65μm, 1.33 abd) and absence of supplements; tail conical, 3.57 abd (male) and 4.58 abd (female) long. Meanwhile, a new record of genus Siphonolaimus from the East China Sea, Siphonolaimus profundus is first reported in China. Types are deposited in the College of Marine Life Sciences, Ocean University of China.