Two new species of Dracoderes (Kinorhyncha: Dracoderidae) from the Ryukyu Islands, Japan, with a molecular phylogeny of the genus
Two new species of Dracoderes (Kinorhyncha: Dracoderidae) from the Ryukyu Islands, Japan, with a molecular phylogeny of the genus
复制标题
来自日本琉球群岛的两个龙蛇新种（动喙：龙蛇科），具有该属的分子系统发育
DOI：
10.11646/zootaxa.3980.3.2
复制
发表时间：
2015
期刊：
影响因子：
0.9
通讯作者：
Hiroshi Yamasaki
中科院分区：
文献类型：
--
作者：
Kanemoto S;Kobayashi Y;Yamashita T;Miyamoto T;Cui M;Asada R;Cui X;Hino K;Kaneko M;Takai T;Matsuhisa K;Takahashi N;Imaizumi K.;Miwa Kana;Kana Miwa;三輪加奈;Miwa Kana;Miwa Kana;三輪加奈;Kana Miwa;三輪加奈;Hiroshi Yamasaki;Hiroshi Yamasaki;Hiroshi Yamasaki
两个新种，Dracoderes snufkini sp.十一月和 Dracoderes toyoshioae sp. 11月，描述于日本南部冲绳。 D. snufkini 的诊断特征包括： 第 2 节和第 5 节上的侧腹小管；第 2 节和第 9 节上有厚实、丰满的中背棘；第 3-8 节上有厚实、丰满的背旁刺，交替横向移位；第 1 节上有腹侧初级梳状边缘，具有长而宽的明显尖端。丰潮龙蛇的诊断特征包括：第1节的背中部表皮下结构；第 2-9 节上的背侧表皮下结构，交替横向移位；至少在第 5 节上，由皮下结构产生的背侧针状棘；第 1 节上的腹外侧针状棘；第 2 段的侧支管；第 2-7 节的侧向附属表皮下结构；第 5 节上的侧腹小管；以及第 2-10 节上的外侧腹侧表皮下结构。基于 18S rRNA、28S rRNA 和线粒体 COI 序列的分子系统发育分析表明，D. abei 和 D. nidhug 彼此之间的相关性比 D. snufkini 或 D. toyoshioae 之间的关系更密切。
Two new species, Dracoderes snufkini sp. nov. and Dracoderes toyoshioae sp. nov., are described from Okinawa, southern Japan. Diagnostic characters of D. snufkini include: lateroventral tubules on segments 2 and 5; a thick, plump middorsal spine on segments 2 and 9; thick plump paradorsal spines on segments 3-8, alternately laterally displaced; and a ventral primary pectinate fringe on segment 1, with long, wide conspicuous tips. Diagnostic characters of Dracoderes toyoshioae include: a middorsal subcuticular structure on segment 1; paradorsal subcuticular structures on segments 2-9, alternately laterally displaced; paradorsal acicular spines arising from subcuticular structures, at least on segment 5; ventrolateral acicular spines on segment 1; lateral accessory tubules on segment 2; lateral accessory subcuticular structures on segments 2-7; lateroventral tubules on segment 5; and lateroventral subcuticular structures on segments 2-10. Molecular phylogenetic analyses based on 18S rRNA, 28S rRNA and mitochondrial COI sequences indicate that D. abei and D. nidhug are more closely related to one another than either is to D. snufkini or D. toyoshioae.