Graduate School of Science, Hokkaido University, Sapporo, Hokkaido 060-0180, Japan,
Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0180, Japan.
Zoolog Sci. 2020 Oct;37(5):467-475. doi: 10.2108/zs200001.
Having been reported in 1898 for the first time from Japanese waters, the lineid heteronemertean auct. is known to inhabit tidal flats under the influence of the warm Kuroshio Current along the coasts of Honshu and southwestward, characteristically with a uniformly raisin-colored to black body lacking a caudal cirrus. The taxonomic identity of the Japanese auct. has been questioned by specialists because of some obvious morphological differences between (Hubrecht, 1887) s.str. (now in Chernyshev, 1995), originally described from the subantarctic region. In the present study, we describe the Japanese auct. as sp. nov. Before the present study, the genus Corrêa, 1963 had been monotypic with the type species Corrêa, 1963 from the Caribbean. We infer the phylogenetic position of within Lineidae based on the mitochondrial 16S rRNA and cytochrome oxidase subunit I, and the nuclear 18S rRNA, 28S rRNA, and histone H3 genes.
自 1898 年首次从日本水域报道以来，线虫异纽虫已被证实栖息在本州和西南地区受黑潮影响的潮间带，其特征是身体呈均匀的葡萄干色至黑色，没有尾须。由于与原本描述于亚热带地区的（Hubrecht，1887）s.str.（现归入 Chernyshev，1995）之间存在明显的形态差异，日本的这一物种的分类地位一直受到专家的质疑。在本研究中，我们将日本的这一物种描述为新种。在本研究之前，Corrêa，1963 属一直是单型属，其模式种 Corrêa，1963 来自加勒比海。我们根据线粒体 16S rRNA 和细胞色素氧化酶亚基 I 以及核 18S rRNA、28S rRNA 和组蛋白 H3 基因推断了线虫科内的系统发育位置。
