Marine Biodiversity

, Volume 48, Issue 4, pp 1879–1887 | Cite as

Claudicuma (Cumacea, Crustacea): First record from the marine environment, description of the second species of the genus and phylogenetic remarks

  • Daniel RoccatagliataEmail author
Original Paper


The genus Claudicuma was erected to accommodate C. platense, a species reported from freshwater and very low-salinity areas at the Río de la Plata, Argentina. Unexpectedly, a large number of the second species of this genus, C. gosztonyii n. sp., was recently collected in the Patagonian Atlantic coast, from the intertidal zone to 13 m of depth. This news species differs from C. platense, mainly in the chaetotaxia of the male second antenna, the acuteness of female pseudorostrum, and the proportions of female uropods. The ovigerous female of C. gosztonyii n. sp. has both degenerated mouthparts and an empty gut, facts that suggest that this is not a feeding instar. The second antennae of the adult male are presumably used to clasp the female. The genus Claudicuma is compared to Picrocuma, Pseudopicrocuma, Bathypicrocuma, Thalycrocuma, Atlantocuma, Almyracuma and Spilocuma, whose males also have short, clasping or vestigial second antennae. Claudicuma differs from all these genera by the coalescence of pereonites 2 and 3 in ovigerous females. The diagnosis of the genus Claudicuma is emended and its phylogenetic position discussed.


Claudicuma Cumacea Argentina New species First marine record 



To Atila Gosztonyi and Luisa Kuba (CENPAT) for sending me the specimens found in the stomach of fish, and for their warm hospitality during a short visit in Puerto Madryn. To Brenda Doti (UBA), Natalia Alberico (UBA) and Ignacio Chiesa (CADIC) for sorting the specimens at the laboratory. To Fabián Tricárico (MACN) for his assistance with the SEM. To Ute Mühlenhardt-Siegel and Kathrin Philipps-Bussau (CeNak, Universität Hamburg) for the specimens of Picrocuma rectangularis, and to Richard W. Heard (GCRL, USA) for the specimens of Spilocuma salomani and S. watlingi. This research was partially supported by the Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina (PIP 11220130100434CO) and the Universidad de Buenos Aires (UBACyT 20020130100711BA).


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Copyright information

© Senckenberg Gesellschaft für Naturforschung and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y NaturalesUniversidad de Buenos AiresBuenos AiresArgentina
  2. 2.Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA)CONICET – Universidad de Buenos AiresBuenos AiresArgentina

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