| SUN Yan,HUANG Mian,HUANG Yong. 2018. Two new species of free-living nematodes from the East China Sea. Acta Oceanologica Sinica, 37(10):148－151 |
| Two new species of free-living nematodes from the East China Sea |
| 东海自由生活线虫两新种 |
| Received:July 05, 2017 |
| DOI：10.1007/s13131-018-1317-y |
| Key words:Hopperia macramphida sp. nov. Nemanema minium sp. nov. marine nematode taxonomy |
| 中文关键词: 新种大化感器霍帕线虫(Hopperia macramphida sp. nov.) 新种小线虫(Nemanema minium sp. nov.) 海洋线虫 分类 |
| 基金项目:The National Natural Science Foundation of China under contract No. 41676146; the Natural Science Foundation of Shandong Province under contract No. ZR2014BM008. |
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| Abstract: |
| 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. |
| 中文摘要: |
| 描述了采自东海陆架沉积物中自由生活线虫Hopperia和Nemanema属的两个新种。新种大化感器霍帕线虫主要特征是螺旋形化感器5圈，较大；弓形交接刺近端宽大具有中肋，延伸至三分之一处；引带具有弯曲的引带突；6个乳突状的肛前辅器；锥柱状尾具有膨大的末端和尾端刚毛。新种小线虫的主要特征是身体大小是属内最小的；具有较大的椭圆形化感器；尾锥状；交接刺细，具有腹面翼膜，近端弯钩状；引带环形；1个肛前辅器乳突状，其上着生3条刚毛。更新完善了Hopperia属17个种的二岐检索表。 |
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