Matsukami Sachi, Nakano Takafumi, Tomikawa Ko
Department of Science Education, Graduate School of Education, Hiroshima University, Higashi-Hiroshima 739-8524, Japan.
Zookeys. 2017 Apr 12(668):33-47. doi: 10.3897/zookeys.668.12181. eCollection 2017.
A new species of the pardaliscid amphipod, , from off Cape Toi, Japan, is named and described. This is the first record of Bruzelius, 1859 from the western Pacific coast of the Japanese archipelago. Additionally, nucleotide sequences of nuclear 28S ribosomal RNA and histone H3 as well as mitochondrial cytochrome oxidase subunit I (COI) and 16S ribosomal RNA from the holotype and paratypes were determined. The morphological characteristics and the COI distance values enforced the distinctiveness of among the known species. closely resembles Bruzelius, 1859 in having a two-dentate posterior margin of usoromite 1. However, the former is distinguished from the latter by the posterior margin of merus of pereopod 4 with 5-6 setae, anterior margin of merus of pereopod 5 with 9-10 setae, and telson with straight inner margin, tapering proximally. A key to the species of is provided.
一种来自日本户井田岬外海的新种斑腹钩虾属（Pardaliscid）双足虾被命名并加以描述。这是布鲁泽柳斯属（Bruzelius，1859）在日本列岛西太平洋海岸的首次记录。此外，还测定了来自正模标本和副模标本的核28S核糖体RNA、组蛋白H3以及线粒体细胞色素氧化酶亚基I（COI）和16S核糖体RNA的核苷酸序列。形态特征和COI距离值证实了该物种在已知物种中的独特性。该物种在第一触角基节的后缘有两个齿，这一点与1859年的布鲁泽柳斯属相似。然而，前者与后者的区别在于，第四步足的腕节后缘有5 - 6根刚毛，第五步足的腕节前缘有9 - 10根刚毛，尾节的内缘笔直，近端逐渐变细。文中提供了该属物种的检索表。
