Arthropod Systematics & Phylogeny 77(2): 303-323, doi: 10.26049/ASP77-2-2019-07
Xiphoarcturus - a new genus and two new species of the family Antarcturidae (Isopoda: Valvifera) from the Mar del Plata submarine canyon and its phylogenetic relationships
expand article infoEmanuel Pereira, Daniel Roccatagliata, Brenda L. Doti

Corresponding author: Emanuel Pereira ( emanuelp@bg.fcen.uba.ar )

© Emanuel Pereira, Daniel Roccatagliata, Brenda Doti.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Open Access
Abstract
Xiphoarcturus kussakini gen.n., sp.n. and Xiphoarcturus carinatus gen.n., sp.n. are described from the Mar del Plata submarine canyon, South-West Atlantic Ocean. The new genus Xiphoarcturus has an elongate endopod of the uropod that extends to the end of the acuminate pleotelson- this elongate endopod is a novel character for the family Antarcturidae. A parsimony analysis based on 40 morphological characters for 20 species of the family Antarcturidae was performed. The consensus tree clusters Xiphoarcturus gen.n. with the genera Mixarcturus, Chaetarcturus, Fissarcturus and the species Acantharcturus acutipleon. The relationships among the genera Acanth-arcturus, Cylindrarcturus, Chaetarcturus, Fissarcturus, Furcarcturus, Glaberarcturus, Globarcturus and Mixarcturus are discussed. Monophyly was recovered to all the genera except for Acantharcturus, which resulted paraphyletic in all the trees obtained.
Keywords
Argentina, deep sea, phylogeny, Xiphoarcturus carinatus sp.n., Xiphoarcturus kussakini sp.n..