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=Volume 9 - 2022

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=The Formosa Ridge methane seep is one of three known active methane seepage areas discovered on the northern slope of the South China Sea. Cyphocaris Boeck, 1871 is a genus of pelagic amphipods. Two new species of Cyphocaris collected from water columns above the Formosa Ridge methane seep are reported in present study. Cyphocaris lubrica sp. nov. collected at a depth of 1118 m is characterized by pereonite 1 dorsal projection not extending beyond head, and the pereopod 5 having a spur beyond pereonite 7. Cyphocaris formosa 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.