A new free-living marine nematode species of Rhinema from the South China Sea
A new free-living marine nematode species of the genus Rhinema belonging to the family Monoposthiidae was collected from marine sediments in the Qiongzhou Strait of the South China Sea, and it is described here as Rhinema longispicula sp. nov. The new species is characterized by coarsely annulated cuticle with 12 longitudinal ridges (alae) marked as reversed V-shaped. The first and second annuli broader and form a kind of a cephalic capsule. The amphideal fovea circular, situated in the middle of the broad second annulus, not surrounded by dense annulations. Buccal cavity cylindrical with a large dorsal tooth. Pharynx with a prominent anterior pharyngeal bulb and an elongated terminal bulb. Elongate spicules strongly curved, with cephalated proximal end and pointed distal end. Gubernaculum boat-shaped, without apophysis. A long and blunt precloacal seta present. Female with two opposed, outstretched ovaries.
KeywordRhinema longispicula sp. nov. free-living marine nematode taxonomy
Unable to display preview. Download preview PDF.
The authors are very thankful to all crew members of R/V Kexue 3 for their kind help in samples collection. We are sincerely grateful to two anonymous referees for providing valuable criticisms and improving on manuscript.
- Cobb N A. 1920. One hundred new nemas (type species of 100 new genera). Contributions to a Science of Nematology9: 217–343.Google Scholar
- Gerlach S A. 1963. Freilebende Meeresnematoden von den Malediven II. Kieler Meeresforschungen, 19: 67–103.Google Scholar
- Huang M, Xu K D, Huang Y. 2019b. Setosabatieria minor sp. nov. (Comesomatidae, Nematoda) from the South China Sea. Cahiers de Biologie Marine60(4): 387–393.Google Scholar
- Tchesunov A V. 2014. Order desmodorida de coninck, 1965. In: Schmidt-Rhaesa A ed. Handbook of Zoology, De Gruyter, Göttingen. p.399–434.Google Scholar
- Timm R W. 1961. The marine nematodes of the Bay of Bengal. Proceedings of the Pakistan Academy of Sciences1 (1): 1–88.Google Scholar