Acta Oceanologica Sinica

, Volume 37, Issue 10, pp 148–151 | Cite as

Two new species of free-living nematodes from the East China Sea

  • Yan Sun
  • Mian Huang
  • Yong HuangEmail author


Two new species of free-living marine nematodes of the genera Hopperia and Nemanema are described from the sublittoral sediment of the East China Sea. Hopperia macramphida sp. nov. is characterized by having large amphidial fovea with five turns; arcuate spicules with enlarged proximal end and central internal lamella extending one third of spicule length from proximal end; gubernaculum with bent apophyses, six papilliform precloacal supplements; and conico-cylindrical tail with swollen tip and terminal setae. Nemanema minutum sp. nov. is characterized by relatively smaller body size in the genus; large oval amphidial fovea; conical tail; slender spicules with alae and hooked proximal end; ring-like gubernaculum; and papilliform precloacal supplements with three short setae. An updated dichotomous key is provided for the 17 species of Hopperia.

Key words

Hopperia macramphida sp. nov. Nemanema minium sp. nov. marine nematode taxonomy 


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The authors are very thankful to all crew members of R/V Kexue Sanhao for their kind help in samples collection. The authors are sincerely grateful to Gao Qun for her slide making.


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Copyright information

© The Chinese Society of Oceanography and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.College of Life SciencesLiaocheng UniversityLiaochengChina

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