中国渤海的微口线虫属(线虫动物门)一新种(英文)

A New Species of Terschellingia (Nematoda) from the Bohai Sea, China

描述了中国渤海自由生活海洋线虫一新种 ,奥氏微口线虫 Tershellingia austenaesp.nov,奥氏微口线虫与同属相近种马尔代夫微口线虫的区别特征是 :体长 (前者为 770～950μm,后者为 2 370μm)、亚头刚毛的位置 (前者位于化感器的两边 ,后者位于化感器之后 )及长度 (前者明显长于后者 ) ,化感器宽度与相应体直径的比例在新种中也更大一些 (50～ 6 0 vs4 5)。提供了一个表格式检索表 ,以助鉴定和比较该属缺乏明显界定食道后球的一个种组。模式标本存放于英国伦敦自然历史博物馆。

A new species of free living marine nematode, Tershellingia austenae sp. nov. from the Bohai Sea, China, is described and illustrated. Tershellingia austenae sp. nov can be separated from a similar species, T.maldiversis in the genus by the length of body (L=770~950μm in the former compared to L=2370 μm in the latter), the position of subcephalic setae which are situated either side of the amphids in the former compared to situated posterior to the amphids in the latter and the length of subcephalic setae (longer in the former than in the latter ). The amphid width as % of corresponding diameter is larger in the Tershellingia austenae sp. nov than in the T. maldivensis (50～60 vs 45). A tabular key is provided to facilitate species identification in the group of lack of a distinctly offset, rounded oesophageal bulb in this genus. The types are deposited in the Natural History Museum (London).