Chimaera notafricana sp. nov. (Chondrichthyes: Chimaeriformes: Chimaeridae), a new species of chimaera from southern Africa
Chimaera notafricana sp. nov. (Chondrichthyes: Chimaeriformes: Chimaeridae), a new species of chimaera from southern Africa
复制标题
非洲银鲛 sp.
DOI：
10.11646/zootaxa.2532.1.2
复制
发表时间：
2010
期刊：
影响因子：
0.9
通讯作者：
Dominique A. Didier
中科院分区：
文献类型：
--
作者：
Jenny M. Kemper;D. Ebert;L. Compagno;Dominique A. Didier
本文报道了银鲛属一新种--背非洲银鲛Chimaera notafricana sp. nov.，是从非洲南部的西海岸和南海岸采集的标本中描述的。该新种与其最近的同源物北大西洋东部的嵌合体Monstrosa的区别在于形态特征和颜色的组合：胸鳍凹陷时达到腹鳍基部的起点;尾鳍腹侧缘终止于尾鳍背侧缘插入点的稍后方;背鳍棘前基部到颞上管中心的距离短。（6.5-14.8% HDL）;腹鳍抱器外部三等分且短（12.1-12.3% BDL），远端三分之一的长度分裂，不延伸超过腹鳍的远端尖端;均匀的黑褐色与暗蓝色条纹，ψ dal尾部有纵向的明暗条纹。该新种分布于纳米比亚的卢德里茨至南非东开普省的阿尔戈亚湾南部。
A new species of chimaera, Chimaera notafricana sp. nov., is described from specimens collected off the west and south coasts of southern Africa. The new species is distinguished from its closest congener, the eastern North Atlantic Chimaera monstrosa, by a combination of morphometric characters and coloration: pectoral fin when depressed reaches to origin of pelvic fin base; caudal fin ventral margin terminating slightly posterior to caudal fin dorsal margin insertion; distance from anterior base of dorsal-fin spine to center of supratemporal canal short (6.5–14.8% HDL); pelvic claspers externally trifid and short (12.1–12.3% BDL), divided for distal one-third of length, not extending past distal tip of pelvic fins; uniform blackish brown with dark bluish streaking, precaudal tail with longitudinal light and dark stripes. This new species has a restricted distribution from Luderitz, Namibia to south of Algoa Bay, Eastern Cape Province, South Africa.