Revision of the genus Oxyarcturus (Isopoda, Valvifera, Antarcturidae), with a description of a new deep-sea species from Argentina

被引:0
作者
Pereira, Emanuel [1 ,2 ]
Roccatagliata, Daniel [1 ,2 ]
Doti, Brenda L. [1 ,2 ]
机构
[1] Univ Buenos Aires, CONICET, Inst Biodivers & Biol Expt & Aplicada IBBEA, Buenos Aires, Argentina
[2] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Biodivers & Biol Expt DBBE, Buenos Aires, Argentina
来源
ZOOSYSTEMATICS AND EVOLUTION | 2023年 / 99卷 / 02期
关键词
Mar del Plata submarine canyon; Oxyarcturus beliaevi (Kussakin; 1967); Oxyarcturus dubius (Kussakin; Oxyarcturus holo-acanthus sp. nov; Southwest Atlantic; PLATA SUBMARINE-CANYON; SP; NOV; FISSARCTURUS ISOPODA; OCEAN; BIODIVERSITY; CRUSTACEA;
D O I
10.3897/zse.99.106667
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
A new antarcturid isopod, Oxyarcturus holoacanthus sp. nov., is fully described based on seven specimens collected in the Mar del Plata submarine canyon at 2950 m depth, during the "Talud Continental III" expedition on board the Argentinian RV "Puerto Deseado". Oxyarcturus holoacanthus sp. nov. is closely related to O. spinosus (Beddard, 1886), from which it can be distinguished by the body spine pattern. The penial plate, a novel character for the genus Oxyarcturus, as well as for the family Antarcturidae, is described in detail. The species O. dubius (Kussakin, 1967) and O. beliaevi (Kussakin, 1967) are considered as incertae sedis until further morphological and molecular data can clarify their taxonomic position. An update of the geographic and bathymetric records of the genus Oxyarcturus is provided.
引用
收藏
页码:457 / 472
页数:16
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