The Antarctic heteronemertean Parborlasia corrugata (McIntosh, 1876) (originally Lineus corrugatus) shows a circumpolar distribution in the Southern Ocean, putatively with high dispersal capacity of the planktonic larva. From the eastern coast of Lützow-Holm Bay near Syowa Station (69°00′S, 39°35′E), several records of heteronemerteans have been made under the name of Lineus corrugatus. However, they have never been explicitly identified by molecular data. In the present study, we determined a partial sequence of the mitochondrial cytochrome c oxidase subunit I (COI) gene for 11 specimens of P. corrugata collected from depths of 17–27 m under sea ice near Syowa Station. A haplotype-network analysis along with other COI sequences from 66 individuals collected at different places in the Antarctic and sub-Antarctic islands, available at public databases, resulted in that all the 11 specimens from Lützow-Holm Bay possessed either of two major haplotypes detected in previous studies. It reflects the effective dispersal of the species between the localities including Lützow-Holm Bay.

南极杂种Parborlasia corrugata（McIntosh，1876）（最初为Lineus corrugatus）在南大洋上表现为绕极分布，推测具有较高的浮游幼虫扩散能力。从Syowa站（69°00′S，39°35′E）附近的吕茨霍姆湾东海岸起，已经以Lineus corrugatus的名字记录了数种异戊二烯的记录。但是，它们从未被分子数据明确鉴定。在本研究中，我们确定了11个皱纹标本的线粒体细胞色素C氧化酶亚基I（COI）基因的部分序列。在Syowa站附近的海冰下从17–27 m的深度收集。一份公共数据库提供的南极和南极群岛不同地点收集的66个个体的单倍型网络分析以及其他COI序列的结果是，吕茨霍姆湾的11个标本全部都具有检测到的两种主要单倍型之一在以前的研究中。它反映了该物种在包括吕茨霍姆湾在内的各个地区之间的有效扩散。