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Yang LI, Zifeng ZHAN, Kuidong XU. Paragorgia papillata sp. nov., a new bubblegum coral (Octocorallia: Paragorgiidae) from a seamount in the tropical Western Pacific[J]. Journal of Oceanology and Limnology, 2021, 39(5): 1758-1766

Paragorgia papillata sp. nov., a new bubblegum coral (Octocorallia: Paragorgiidae) from a seamount in the tropical Western Pacific

Yang LI1, Zifeng ZHAN1, Kuidong XU1,2,3
1 Laboratory of Marine Organism Taxonomy and Phylogeny, Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China;
2 Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China
A new species of bubblegum coral, Paragorgia papillata sp. nov., discovered from a seamount located on the Caroline Ridge at the water depth of 858 m, is studied using morphological and molecular approaches. The new gorgonian is white-colored, uniplanar with prominent autozooids, and measures about 670-mm high and 690-mm wide. The genetic distance and phylogenetic analysis showed that P. papillata sp. nov. was closely related to P. coralloides Bayer, 1993, but the former differs morphologically from the latter by its prominent calyces (diameter 2.0-4.0 mm and height 1.5-3.0 mm vs. both diameter and height about 1 mm), white cortex (vs. pink), regular 8-radiates in surface cortex (vs. mostly 8-radiate derived globular radiates) and highly ornate medullar spindles (length 185-400 μm vs. no more than 150 μm). P. papillata sp. nov. is the third known white-colored species of the genus, and the fifth species found in the tropical Western Pacific.
Key words:    Paragorgia|gorgonian|Scleraxonia|Cnidaria|new species|seamount   
Received: 2020-10-27   Revised: 2020-12-02
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