Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912

  title={Two new cumaceans (Crustacea: Peracarida) from the South-West Atlantic with remarks on the problematic genus Holostylis Stebbing, 1912},
  author={Daniel Roccatagliata and Natalia A. Alberico},
  journal={Marine Biodiversity},
  pages={163 - 181}
In 1912-13, Stebbing erected the genera Holostylis and Ekdiastylis for those diastylids with the endopod of the uropods being one- and two-segmented, respectively. The validity of the genus Holostylis is still controversial and the genus Ekdiastylis continues to be suppressed. In the present contribution, two new diastylids are fully described and illustrated: one of them has the endopod of the uropod one-segmented, Holostylis uniramosa n. sp., and the other has the endopod of the uropod two… 

Biodiversity of Isopoda and Cumacea (Peracarida, Crustacea) from the Marine Protected Area Namuncurá-Burdwood Bank, South-West Atlantic

The biodiversity of the isopods and cumaceans from Burdwood Bank is typically Magellanic, and there is little correspondence between this fauna and that from the Antarctic Peninsula and Scotia Arc.



Observations on Cumacea (Malacostraca: Peracarida) from Antarctic and subantarctic waters. III. The genus Holostylis Stebbing, 1912 (Diastylidae), with a supplemental description of H. helleri (Zimmer, 1907) and the description of H. spinicauda, a new deep-water species

The diastylid genus Holostylis Stebbing, 1912, which is characterized by the presence of an apparently uniarticulate uropodal endopod, is considered valid and a new deep-water form, H. spinicauda, is presented, which differs from H. helleri by apparently lacking exopods on the female and by having its telson armed with a cluster of proximal dorsal spines.

On two South-West Atlantic Diastylis (Cumacea: Crustacea), D. obliquisulcata n: sp. and D. geocostae, with remarks on this speciose genus.

The adult male of Diastylis geocostae is described for the first time, the adult female briefly redescribed, and its distribution, up to now known from the type locality only (Cabo Frio, Rio de Janeiro State), is extended to off Rawson, Argentina.

On Two Species of Diastylis (Cumacea) from the Southwestern Atlantic: D. sexpectinata n. sp. and D. hammoniae Zimmer, 1902

Diastylis sexpectinata is a new species of cumacean that extends from São Paulo State (Brazil) to northern Patagonia (Argentina) and its synonymy with Diastyl is hammoniae is proposed.

Observations on Cumacea (Malacostraca: Peracarida) from Antarctic and Subantarctic Waters. I. Ekleptostylis debroyeri (Diastylidae), a New Species from Waters off the Antarctic Peninsula

A nineteenth species of diastylid cumaceans has been described from Antarctic and subantarctic waters, and the mature male of E. debroyeri is unknown, it is tentatively placed in Ekleptostylis based on the similarity of the female to other known species of the genus.

Diastylis fabrizioi, a new species and brief redescription of D. planifrons Calman, 1912 (Crustacea: Cumacea: Diastylidae) from South America

A new cumacean from the southwestern Atlantic, Diastylis fabrizioi, is fully described. This species is closely allied to Diastylis planifrons Calman, 1912, whose description is also completed. D.

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It is concluded that the Antarctic shelf regions were not colonized from the Magellan region via the Scotia Arc as well as the Subantarctic Islands and South Georgia, which show very little species overlap.

Elements for a revision and notes on bionomy of the Cumacea (Crustacea: Peracarida) of the Weddell Sea (Antarctica). : Material collected by the Expedition ANTARKTIS-VIII/5 of R.V. “Polarstern” 1989/90

Among 26 species of Antarctic Cumacea sampled during the southern summer 1989/90 from benthic habitats in the Weddell Sea, four are described as new to science, pointing to the possibility of various breeding strategies in high Antarctic waters.

Cumacea (Crustacea) de la compagne EPOS 3 du R.V. Polarstern en mer de Weddell, Antarctique

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Systematics and distribution of cumaceans collected during BENTART-95 cruise around South Shetland Islands (Antarctica)*

During the BENTART-95 cruise, 24 stations around the South Shetland Islands and Trinity Island, ranging from 45 to 649 m bottom depth, were sampled using a Macer-GIROQ sledge. Alltogether, 1236

Revising the definition of the crustacean seta and setal classification systems based on examinations of the mouthpart setae of seven species of decapods

The cuticular projections on the mouthparts of seven species of decapods are examined by scanning and transmission electron microscopy and a new definition is given: a seta is an elongate projection with a more or less circular base and a continuous lumen.