AUTHOR=Wang Yanrong , Sha Zhongli , Ren Xianqiu 

TITLE=Two New Species of Cyphocaris (Amphipoda, Amphilochidea, Cyphocarididae) From Water Columns Above a Methane Seep in the South China Sea

JOURNAL=Frontiers in Marine Science

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2022.849449

DOI=10.3389/fmars.2022.849449

ISSN=2296-7745

ABSTRACT=<p>The Formosa Ridge methane seep is one of three known active methane seepage areas discovered on the northern slope of the South China Sea. <italic>Cyphocaris</italic> is a genus of pelagic amphipods. Two new species of <italic>Cyphocaris</italic> collected from water columns above the Formosa Ridge methane seep are reported in the present study. <italic>Cyphocaris lubrica</italic> sp. nov. collected at a depth of 1,118 m is characterized by pereonite 1 dorsal projection not extending beyond head, and the pereopod 5 having a spur beyond pereonite 7. <italic>Cyphocaris formosa</italic> sp. nov. collected at a depth of 500–800 m is characterized by well-developed pereonite 1 dorsal projection extending beyond head and pereopod 5 without spur. The present work describes these two new species and compares them with closely related species, and provides a modified key of world Cyphocarididae species.</p>