Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 2Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China. University of Chinese Academy of Sciences, Beijing 100039, China.
Laboratory of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China 2Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China. Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China.
Zootaxa. 2021 Aug 9;5016(4):490-502. doi: 10.11646/zootaxa.5016.4.2.
Two new species of free-living marine nematodes from the South China Sea are described: Gomphionema setiforme sp. nov. from intertidal sediment and Paracomesoma longissimum sp. nov. from upper continental slope sediment. Gomphionema setiforme sp. nov. is characterized by the punctated cuticle without lateral differentiation and cuticular pores; short cephalic setiform sensilla; spiral amphideal fovea with 4 turns close to the anterior body extremity; large cuticularized buccal cavity with a massive dorsal tooth; pharynx with a large posterior bulb; short, curved spicules; knife-like gubernaculum without apophyses and 11 cup-shaped precloacal supplements. Paracomesoma longissimum sp. nov. is characterized by cuticle with transverse rows of fine punctuations without lateral differentiation; buccal cavity with three teeth; lateral outer labial setiform sensilla 1.5 times as long as the other four outer labial setiform sensilla; spiral amphideal fovea with 2.5 turns; spicules 350360 m long or 15.716 times cloacal body diameter; plate-like gubernaculum without apophyses and 2528 papilliform precloacal supplements.
具刚毛的 Gomphionema setiforme sp. nov. 来自潮间带沉积物，以及长 Paracomesoma longissimum sp. nov. 来自上大陆坡沉积物。具刚毛的 Gomphionema setiforme sp. nov. 的特征为具点状表皮无侧向分化和表皮孔；短的头部刚毛状感觉器；螺旋 Amphideal 窝有 4 圈靠近身体前段；大的角质化口腔，有一个大的背齿；咽部有一个大的后球；短而弯曲的刺；无附肢的刀状尾乳突和 11 个杯状的肛前补充。长 Paracomesoma longissimum sp. nov. 的特征为表皮具细点状的横排，无侧向分化；口腔有 3 个齿；外侧外唇刚毛状感觉器比其他四个外侧外唇刚毛状感觉器长 1.5 倍；螺旋 Amphideal 窝有 2.5 圈；刺长 350360 m 或 15.716 倍肛体直径；板状尾乳突无附肢和 2528 个乳头状肛前补充。
