A new genus and species of shrimp (Crustacea: Axiidea: Axiidae) from the Caroline Ridge, Northwest Pacific

Qi KOU; Gary C.B.POORE; Xinzheng LI

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A new genus and species of shrimp (Crustacea: Axiidea: Axiidae) from the Caroline Ridge, Northwest Pacific

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A new genus and species of axiid shrimp,Carolinaxius kexuae gen.et sp.nov.is described and illustrated based on a single specimen collected from an unnamed seamount in the Caroline Ridge,Northwest Pacific.Although both chelipeds are mis sing,the specimen can be distinguished from other axiid genera by a combination of characteristics:narrowly triangular ro strum;median carina and lateral gastric carina each with one prominent tooth;submedian gastric carinae converging po steriorly,with teeth;cornea weakly pigmented,eyestalk with acute distome sial tooth on dorsal surface;male pleopod 1 two-articled;pleopod 2 with appendix interna and appendix masculina;pleopods 3-5 with appendix interna.The molecular phylogeny suggests the new genus is most closely related to another recently described genus living inside hexactinellid sponges on seamounts in the Indian Ocean,Montanaxius Dworschak,2016.However,it differs from Montanaxius in the shape of the rostrum,the arrangement of teeth on the carapace,and the shape of the eyestalk.Besides,the significant molecular differences support the two belonging to different genera.

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《中国海洋湖沼学报（英文版）》 |2021年第5期|1830-1840|共11页
作者
Qi KOU; Gary C.B.POORE; Xinzheng LI;
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作者单位

Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China;

Center for Ocean Mega-Science Chinese Academy of Sciences Qingdao 266071 China;

Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266237 China;

University of Chinese Academy of Sciences Beijing 100049 China;

Museums Victoria PO Box 666 Melbourne Vic.3001 Australia;

Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China;

Center for Ocean Mega-Science Chinese Academy of Sciences Qingdao 266071 China;

Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266237 China;

University of Chinese Academy of Sciences Beijing 100049 China;

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A new genus and species of shrimp (Crustacea: Axiidea: Axiidae) from the Caroline Ridge, Northwest Pacific

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