New species of Echinoderes (Kinorhyncha: Cyclorhagida) from Mediterranean seamounts and from the deep-sea floor in the Northeast Atlantic Ocean, including notes on two undescribed species.
New species of Echinoderes (Kinorhyncha: Cyclorhagida) from Mediterranean seamounts and from the deep-sea floor in the Northeast Atlantic Ocean, including notes on two undescribed species.
复制标题
来自地中海海山和东北大西洋深海海底的棘蜥新物种（Kinordhyncha：Cyclorhagida），包括关于两个未描述物种的记录
DOI：
10.11646/zootaxa.4387.3.8
复制
发表时间：
2018
期刊：
影响因子：
0.9
通讯作者：
George K.H.
中科院分区：
文献类型：
--
作者：
Yamasaki H;Neuhaus B;George K.H.
描述了来自埃拉托色尼海山和塞德洛海山附近的一个深海站的两种新的棘虫属物种。多孔棘蝽 sp.十一月来自埃拉托色尼海山的特征是在节段 4、6 和 8 上存在中背针状棘，在节段 2 上存在腹外侧管，在节段 5 上存在侧腹管，在节段 6-9 上存在侧腹针状棘，在节段 10 上存在中侧管，在节段 2 的背下位置和节段 4-9 的背侧位置存在 2 型腺细胞出口。刺棘棘属十一月来自深海站的与同类的不同之处在于，第 4 节上的背中针状棘、第 6 节和第 7 节上的侧腹针状棘、第 1 节的中部位置的 2 型腺细胞出口、第 2 节的背下、背侧、下侧和腹外侧位置、第 5 节的侧面附件位置和第 8 节的侧下位置，以及密集排列的梳状边缘初级梳状边缘的齿在第 1-10 节上的宽度相似。此外，还给出了来自阿那克西美尼斯海山和塞德洛海山附近的深海站的两个未描述物种的形态数据。来自阿那克西美尼海山的一个未描述的物种在形态上与 Echinoderes unispinosus sp 相似。 11 月，但不同之处在于较小的躯干长度、第 1 节上初级梳状边缘较宽的梳状边缘齿的存在以及第 8 节上缺乏腹内侧感觉点。来自深海站的另一种未描述的物种在刺、管和 2 型腺细胞出口的模式以及中背和侧终刺的长度方面与其同源不同。在这项研究中，没有给这两个未描述的物种起新名称，因为每个物种只有一个标本，而且两个标本在准备过程中都受到了损坏。
Two new species of Echinoderes from the Eratosthenes Seamount and a deep-sea station near the Sedlo Seamount are described. Echinoderes multiporus sp. nov. from the Eratosthenes Seamount is characterized by a combination of the presence of middorsal acicular spines on segments 4, 6, and 8, ventrolateral tubes on segment 2, lateroventral tubes on segment 5, lateroventral acicular spines on segments 6-9, midlateral tubes on segment 10, and type-2 glandular cell outlets in subdorsal position on segment 2 and in laterodorsal position on segments 4-9. Echinoderes unispinosus sp. nov. from the deep-sea station differs from its congeners by the combination of middorsal acicular spine on segment 4, lateroventral acicular spines on segments 6 and 7, type-2 glandular cell outlets present in midlateral position on segment 1, in subdorsal, laterodorsal, sublateral, and ventrolateral position on segment 2, in lateral accessory position on segment 5, and in sublateral position on segment 8, and densely aligned pectinate fringe teeth of the primary pectinate fringes similar in width on segments 1-10. In addition, the morphological data of two undescribed species from the Anaximenes Seamount and a deep-sea station near the Sedlo Seamount are given. An undescribed species from the Anaximenes Seamount is morphologically similar to Echinoderes unispinosus sp. nov., but differs in the smaller trunk length, the presence of broader pectinate fringe teeth of the primary pectinate fringe on segment 1, and the absence of ventromedial sensory spots on segment 8. Another undescribed species from the deep-sea station differs from its congeners in the pattern of spines, tubes, and type-2 glandular cell outlets and length of middorsal and lateral terminal spines. New names are not given to both undescribed species in this study, because only one specimen is available for each species, and both of the specimens were damaged during the preparation.