Nielsen Jørgen G
Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark.; Email:
Zootaxa. 2015 Nov 5;4039(2):323-44. doi: 10.11646/zootaxa.4039.2.7.
The cosmopolitan, deep sea, aphyonid genus Aphyonus is known from less than 100 specimens. The type species A. gelatinosus Günther, 1878 and three additional valid species, A. brevidorsalis Nielsen, 1969, A. bolini Nielsen, 1974, and A. rassi Nielsen, 1975 were all based on single specimens. Since then several specimens have been caught of which 52 are examined for the present revision. Most of the specimens are referred to A. gelatinosus but also to A. bolini and A. rassi. A result of the enlarged material is that the type species, A. gelatinosus, is found to differ so much from the remaining species that a new genus, Paraphyonus, is established for these species. Furthermore two new species of Paraphyonus are here described, P. iselini based on six specimens from the tropical northwestern Atlantic Ocean and P. merretti based on three specimens from the northeastern Atlantic Ocean. The present knowledge of the variation of the Paraphyonus species makes it relevant to transfer Barathronus solomonensis Nielsen & Møller, 2008 to this genus.
世界性分布的深海盲鳗属Aphyonus，已知标本数量不足100个。模式种A. gelatinosus Günther，1878以及另外三个有效物种，即A. brevidorsalis Nielsen，1969、A. bolini Nielsen，1974和A. rassi Nielsen，1975均基于单个标本。从那时起捕获了多个标本，其中52个用于本次修订的研究。大多数标本被鉴定为A. gelatinosus，但也有A. bolini和A. rassi。扩大样本量的结果是，模式种A. gelatinosus与其余物种差异极大，因此为这些物种建立了一个新属Paraphyonus。此外，本文还描述了Paraphyonus属的两个新物种，基于来自热带西北大西洋的六个标本命名的P. iselini和基于来自东北大西洋的三个标本命名的P. merretti。目前对Paraphyonus属物种变异的了解使得有必要将2008年Nielsen和Møller描述的Barathronus solomonensis归入该属。
