Acanthocopinae (Crustacea: Isopoda: Munnopsididae) from the Southern Ocean deep sea with the description of Acanthocope eleganta sp. nov.

Zootaxa ◽  
2004 ◽  
Vol 550 (1) ◽  
pp. 1 ◽  
Author(s):  
MARINA MALYUTINA ◽  
ANGELIKA BRANDT
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
Weddell Sea ◽  
Terminal Spine ◽  
Ventral Spine

Acanthocope eleganta sp. nov. is described from the abyssal Southern Ocean near the Southern Ocean Peninsula. The new species differs from others in the following: a slender dorsomedial spine on the pleon anteriorly, a pair of short dorsal spines and long ventral spine on each of pereonites 5 and 6; uropods half as long as the terminal spine of the pleotelson and with a minute exopod. A. annulatus Menzies, 1962 is redescribed; A. galatheae Wolff, 1962, previously known only from the Gulf of Panama and from Angola Basin, is recorded from the northwest Weddell Sea.

scholarly journals Macrostylis cerritus sp. nov., a new species of Macrostylidae (Isopoda: Asellota) from the Weddell Sea, Southern Ocean

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 356-370
Author(s):  
AIDAN VEY ◽  
SASKIA BRIX
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
Weddell Sea ◽  
Ventral Spine ◽  
A New Species

Macrostylis cerritus sp. nov. (Macrostylidae) is described from the Weddell Sea, Antarctica, at a depth of 2149 m. The new species differs from other species of Macrostylis due to the incisor with 4 cusps; the strongly hook-shaped ischium of pereopod 3; pereopod 4 being greatly reduced and juvenile in appearance; the operculum bearing a ventral spine-like seta; and the absence of pleopod 5. This species is the fourth deep-sea macrostylid identified from the Southern Ocean, and is one more species described from the specimens of ANDEEP I–III expeditions.

First record and new species of the genus Hebefustis Siebenaller & Hessler, 1977(Isopoda: Asellota: Nannoniscidae) from the deep Weddell Sea Basin

Zootaxa ◽  
2008 ◽  
Vol 1866 (1) ◽  
pp. 467 ◽  
Author(s):  
STEFANIE KAISER
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
First Record ◽  
Weddell Sea ◽  
Current Paper ◽  
Community Patterns ◽  
Female Antenna

The ANDEEP (ANtarctic benthic DEEP-sea biodiversity, colonisation history and recent community patterns) cruises contributed immensely to the understanding of the deep Southern Ocean biodiversity, and study of the fauna, in particular the isopod crustaceans, which were revealed to be patchily rich. Most of the species found during the three ANDEEP expeditions were not only new to the region but also new to science. In the current paper a new nannoniscid species, Hebefustis clareolithis sp. nov., is described from the deep Weddell Sea Basin (Southern Ocean). Specimens of the new species were sampled during ANDEEP III in Antarctic summer 2004/05 and represent the first Southern Ocean record of the genus Hebefustis Siebenaller & Hessler, 1977. The new species closely resembles Hebefustis cornutus Siebenaller & Hessler, 1977 but can be distinguished from the latter by the number of flagellar articles of the female antenna, the shape of pleopod 1 and pleotelson in male. A key to the species in the genus Hebefustis is provided.

A revaluation of the Eurycopinae (Crustacea, Isopoda, Munnopsidae) with a description of Dubinectes gen. nov. from the southern Atlantic deep sea

Zootaxa ◽  
2006 ◽  
Vol 1272 (1) ◽  
pp. 1 ◽  
Author(s):  
MARINA MALYUTINA ◽  
ANGELIKA BRANDT
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
Posterior Margin ◽  
New Genus ◽  
Weddell Sea ◽  
Large Head ◽  
Two New Species ◽  
Genus Two ◽  
New Diagnosis

A new genus of Eurycopinae (Munnopsidae), Dubinectes gen. nov., is described for Eurycope acutitelson Menzies, 1962, E. nodosa Menzies, 1962 and two new species, collected from the Weddell Sea, Southern Ocean. The new genus is distinguished by the distinctive shape of the pleotelson posterior margin and the uropod protopod angled at midlength, along with the robust, long rostrum of a large head, overhanging frons, reduced distomedial lobe of article 1 of antenna 1, the produced male pleopod 1 distolateral lobes and the distinct shape of the male pleopod 2. Descriptions of the new genus, two new species and redescriptions of two previously described species are presented, as well as a new diagnosis of the subfamily Eurycopinae, the genus Eurycope and a key to the genera of Eurycopinae.

Molecular systematics of Thouarella (Octocorallia:Primnoidae) with the description of three new species from the Southern Ocean based on combined molecular and morphological evidence

2021 ◽  
Author(s):  
Mónica Núñez-Flores ◽  
Daniel Gomez-Uchida ◽  
Pablo J. López-González
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Species Delimitation ◽  
Nuclear Dna ◽  
Phylogenetic Analyses ◽  
Weddell Sea ◽  
Morphological Evidence ◽  
Three New Species ◽  
Taxonomic Framework ◽  
The Antarctic

Thouarella Gray, 1870, is one of the most speciose genera among gorgonians of the family Primnoidae (Cnidaria:Octocorallia:Anthozoa), being remarkably diverse in the Antarctic and sub-Antarctic seafloor. However, their diversity in the Southern Ocean is likely underestimated. Phylogenetic analyses of mitochondrial and nuclear DNA markers were integrated with species delimitation approaches as well as morphological colonial and polyps features and skeletal SEM examinations to describe and illustrate three new species within Thouarella, from the Weddell Sea, Southern Ocean: T. amundseni sp. nov., T. dolichoespinosa sp. nov. and T. pseudoislai sp. nov. Our species delimitation results suggest, for the first time, the potential presence of Antarctic and sub-Antarctic cryptic species of primnoids, based on the likely presence of sibling species within T. undulata and T. crenelata. With the three new species here described, the global diversity of Thouarella has increased to 41 species, 15 of which are endemic to the Antarctic and sub-Antarctic waters. Consequently, our results provide new steps for uncovering the shelf benthonic macrofauna’s hidden diversity in the Southern Ocean. Finally, we recommend using an integrative taxonomic framework in this group of organisms and species delimitation approaches because the distinctions between some Thouarella species based only on a superficial examination of their macro- and micromorphological features is, in many cases, limited.

Holodentata gen. nov. (Isopoda: Asellota: Paramunnidae) with a description of two new species: H. caeca and H. triangulata from the Southern Ocean

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 395-412 ◽  
Author(s):  
BRENDA LÍA DOTI ◽  
MADHUMITA CHOUDHURY ◽  
ANGELIKA BRANDT
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Dorsal View ◽  
Type Species ◽  
New Genus ◽  
Ross Sea ◽  
Weddell Sea ◽  
Two New Species

A new genus of Paramunnidae, Holodentata (type species: Paramunna gaussi Vanhöffen, 1914) is erected. The new genus comprises two new species: H. caeca, from the deep Weddell Sea and H. triangulata, from the Ross Sea. The new genus is distinguished by the following characters: article 3 of the antenna short and with strong denticles, mandible palp absent, article 2 of maxilliped palp longest, coxal plates visible in dorsal view in all pereonites, pleotelson broad and laterally denticulated.

Description of three new species of the deep-sea munnopsid genus Belonectes (Crustacea, Isopoda, Asellota) from the Weddell Sea, Southern Ocean

Zootaxa ◽  
2009 ◽  
Vol 2277 (1) ◽  
pp. 33-52
Author(s):  
MARINA V. MALYUTINA ◽  
ANGELIKA BRANDT
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Weddell Sea ◽  
Distal Margin ◽  
Atlantic Sector ◽  
Medial Lobe ◽  
Southeastern Pacific ◽  
Three New Species ◽  
Article 5 ◽  
Northeastern Atlantic

Three new species of the genus Belonectes Wilson & Hessler, 1981, from the munnopsid subfamily Eurycopinae Hansen are described from the deep Weddell Sea, Atlantic sector of the Southern Ocean. Belonectes grasslei sp. nov., B. stoddarti sp. nov., and B. daytoni sp. nov. are the first species of the genus described from the region: previously only two species of Belonectes were known from the northeastern Atlantic and the Peru-Chile Trench, the southeastern Pacific. The modified diagnosis of the genus Belonectes and a key to the species of the genus are presented. The pattern of the total ventral sculpture of the natasome, a medial lobe of article 4 of the maxillipedal palp which is larger than article 5 and the navicular male pleopod 1 with its deep keel are suggested to be additional important generic characters of Belonectes. The most useful characters to distinguish species of Belonectes are the size of article 1 of the antennula, the shape and size of the articles 3–5 of the maxillipedal palp, the shape of the distal margin of the male pleopod 1, the shape of distolateral part of the protopod of the male pleopod 2, the size and shape of the preanal ridge, and the size of the exopod of the uropod.

New subgenus and new species of marine benthic ostracods of genus Doloria (Ostracoda; Myodocopina) from the Southern Ocean

Zootaxa ◽  
2012 ◽  
Vol 3356 (1) ◽  
pp. 1 ◽  
Author(s):  
VLADIMIR G. CHAVTUR ◽  
SIMONE N. BRANDÃO ◽  
ALEXANDER G. BASHMANOV
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
Novel Species ◽  
The Other ◽  
The Novel ◽  
Atlantic Sector ◽  
New Subgenus ◽  
Fifth Limb ◽  
Water Depths

The project ANDEEP was designed to fill gaps in the knowledge of the biodiversity of the Southern Ocean deep sea. Threeoceanographic cruises (ANDEEP I, II and III) were undertaken in 2002 and 2005 in the Atlantic Sector of the SouthernOcean. Hundreds of samples were collected from 40 stations with water depths ranging from 748 to 6,348 m. Investiga-tions were carried out on a broad range of taxa, including bacteria, meio-, macroand megafauna. Approximately 5000ostracods were collected, which included 29 specimens of Doloria (Dolorietta) subgen. nov.The subdivision of the genus Doloria Skogsberg, 1920 into two subgenera, Doloria (Doloria) and the novel subgenusDoloria (Dolorietta), is based on differences in the structures of the fifth limb, the armature of the sensory bristle on the5th segment of the antennula, and the number of bristles on the 4th endite of the sixth limb. Four new species in the newsubgenus were identified from the ANDEEP samples. The new subgenus and the four novel species are described andillustrated. Two of these new species are named Doloria (Dolorietta) antarctica sp. nov. and Doloria (Dolorietta) sextafiliformis sp. nov., but the other two species are left in open nomenclature (i.e. Doloria (Dolorietta) sp. nov. 1 and Doloria(Dolorietta) sp. nov. 2) because only juveniles were found in our material. Keys to the subgenera and species of Doloria are provided.

Eurycope crassiramis sp. nov., a new species of Munnopsidae (Crustacea, Isopoda,Asellota) from the Weddell Sea, Southern Ocean

Zootaxa ◽  
2008 ◽  
Vol 1866 (1) ◽  
pp. 540 ◽  
Author(s):  
OLGA A. GOLOVAN
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Body Length ◽  
Weddell Sea ◽  
Peculiar Form ◽  
A New Species

A new species of Eurycopinae (Munnopsidae) Eurycope crassiramis sp. nov. is described from the bathyal of the Weddell Sea, Southern Ocean. The new species is most similar to E. gaussi Wolff, 1956. Both species can be distinguished from all other species of this genus by the short cephalon and ambulosome (each length in the new species is 0.1 body length), a rostrum equal or subequal to medial cephalic length, a uropod with very broad rami and a protopod not broadened medially, and the peculiar form of the male pleopod 1. The new species differs from E. gaussi by the following characters: a lacinia mobilis with 6 denticles, a mandibular spine row with 6–7 setae, and a distolateral margin of male pleopod 1 broadly rounded, without projecting corners.

scholarly journals A new genus and two new species of saccamminid foraminiferans (Protista, Rhizaria) from the deep Southern Ocean

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 9-22 ◽  
Author(s):  
TOMAS CEDHAGEN ◽  
ANDREW J. GOODAY ◽  
JAN PAWLOWSKI
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
New Genus ◽  
Species Group ◽  
Weddell Sea ◽  
Rrna Gene ◽  
Antarctic Species ◽  
Epibenthic Sledge ◽  
Two New Species ◽  
Gene Data

We describe two new species of spherical single-chambered ('saccamminid') foraminifera from the bathyal and abyssal Weddell Sea (Southern Ocean), collected in epibenthic sledge and Agassiz trawl samples obtained during the 2005 ANDEEP III campaign. Both are assigned to Leptammina gen. nov. The new genus is similar in overall test morphology to Saccammina Carpenter, 1869; it is distinguished mainly by its test wall, which is delicate, flexible and composed of fine mineral grains, rather than being rigid and coarsely agglutinated. In Leptammina grisea gen. et sp. nov., the test wall is relatively thick, grayish with a violet tinge and a dull surface; the cytoplasm is dark greenish. In Leptammina flavofusca gen. et sp. nov., the test is yellowish brown, with a very finely, almost transluscent agglutinated wall; the cytoplasm is pale yellowish. Both species have prominent circular apertures. Maximum likelihood phylogenetic analysis of SSU rRNA gene data showed that both species group together with an undescribed shallow-water Antarctic species (“silver saccamminid”) in a very strongly supported clade (100 %). Leptammina grisea gen. et sp. nov. is a relatively uncommon species (29 specimens from 3 stations), found at 1580–4822 m depth in the central and north–western Weddell Sea; Leptammina flavofusca gen. et sp. nov. is common (398 specimens from 4 stations) at depths of 3138–4795 m in the central Weddell Sea and off Kapp Norvegia. Both species are presently known only from ANDEEP III samples.

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