Komai Tomoyuki, Hanai Motoya
Natural History Museum and Institute; Chiba; 955-2 Aoba-cho; Chuo-ku; Chiba 260-8682; Japan.
Graduate School of Marine Science and Technology; Tokyo University of Marine Science and Technology; 4-5-7 Konan; Tokyo; Minato 108-8477 Japan.
Zootaxa. 2024 Apr 23;5443(3):417-430. doi: 10.11646/zootaxa.5443.3.6.
During a survey of the shallow water decapod fauna in the Miura Peninsula, Kanagawa Prefecture, central Japan, four specimens of a new palaemonid shrimp, Palaemon parvibrachium n. sp., were collected from sea grass beds of Nanozostera japonica (Ascherson & Graebner) Tomlinson & Posluszny, 2001. The new species appears morphologically similar to P. serrifer (Stimpson, 1860), one of the most common representatives of Palaemon Weber, 1795 in Japanese waters, but the short carpus of the second pereopod and the different live colouration readily differentiate the new species from the latter. A DNA barcode (a partial fragment of the mitochondrial CO1 gene), as well as a partial fragment of the mitochondrial 16S rRNA gene, are provided to genetically characterize the new species.
在对日本中部神奈川县三浦半岛的浅水十足类动物区系进行调查期间，从2001年汤林森和波什卢兹尼鉴定的日本矮大叶藻（Ascherson & Graebner）的海草床中采集到了四只新的长臂虾科虾类标本，即小臂长臂虾（Palaemon parvibrachium n. sp.）。新物种在形态上似乎与日本水域中1795年韦氏长臂虾属（Palaemon Weber）最常见的代表物种之一——锯缘长臂虾（P. serrifer，斯廷普森，1860年）相似，但第二对步足的短腕节和不同的活体颜色很容易将新物种与后者区分开来。提供了一个DNA条形码（线粒体CO1基因的部分片段）以及线粒体16S rRNA基因的部分片段，以对新物种进行遗传特征分析。
