Huang Mian, Huang Yong
College of Life Sciences, Liaocheng University, Liaocheng 252059, China.
Zootaxa. 2018 Apr 12;4407(4):573-581. doi: 10.11646/zootaxa.4407.4.9.
Two new free-living marine nematode species of the genus Paracomesoma and genus Metacomesoma belonging to family Comesomatidae are described from the sublittoral sediment of the East China Sea. Paracomesoma zhangi sp. nov. is characterized by cuticle with fine transverse rows of dots, without lateral differentiation; buccal cavity with three small teeth; cephalic setae 13.5 μm long; multispiral amphideal fovea with three turns; spicules slender and elongated with thick cuticularized proximal end; gubernaculum plate-like without apophysis; 26 minute precloacal supplements. Metacomesoma macramphida sp. nov. is characterized by very small buccal cavity without teeth; inner and outer labial sensilla papilliform; four cephalic setae 1.5 μm long; multispiral amphideal fovea large, with 4.5 turns; spicules slender and elongated, with cephalated proximal end and finger-shaped distal end; gubernaculum plate-like, without apophysis; precloacal supplements absent. An updated dichotomous key for the identification of the males of the species of Paracomesoma is provided.
从中国东海潮下带沉积物中描述了隶属于科梅索线虫科的副科梅索线虫属和新科梅索线虫属的两种新的自由生活海洋线虫物种。张氏副科梅索线虫新种的特征为：角质层有细小的横向点状排列，无侧向分化；口腔有三颗小齿；头部刚毛长13.5微米；多螺旋化感器有三圈；交合刺细长，近端角质化增厚；引带呈板状，无突出物；有26根微小的泄殖腔前补充器。大化感器新科梅索线虫的特征为：口腔非常小，无齿；内外唇感觉器呈乳头状；四根头部刚毛长1.5微米；多螺旋化感器大，有4.5圈；交合刺细长，近端有头部，远端呈指状；引带呈板状，无突出物；无泄殖腔前补充器。提供了一个用于鉴定副科梅索线虫属物种雄性的最新双歧检索表。
