A new species ofPycnogonumBrünnich, 1764 (Arthropoda, Pycnogonida) with other pycnogonid records from the Falkland and South Shetland Islands

Ophelia ◽  
1995 ◽  
Vol 40 (3) ◽  
pp. 199-205 ◽  
Author(s):  
Roger N. Bamber
Keyword(s):  
New Species ◽  
South Shetland Islands ◽  
Shetland Islands ◽  
A New Species

A new species of Ammothea and other pycnogonids from around Livingston Island, South Shetland Islands, Antarctica

2000 ◽  
Vol 12 (1) ◽  
pp. 47-51 ◽  
Author(s):  
Tomás Munilla León
Keyword(s):  
New Species ◽  
Abundant Species ◽  
South Shetland Islands ◽  
Similar Species ◽  
Shetland Islands ◽  
Livingston Island ◽  
The Family ◽  
A New Species

Specimens of 22 species of pycnogonids belonging to twelve genera and seven families were collected during a cruise near Livingston Island, South Shetland Islands. Twenty two of the 94 stations yielded pycnogonids: the new species Ammothea hesperidensis is described fully, illustrated, and compared with similar species. The family Nymphonidae provided both the greatest diversity of species (seven) and number of specimens (35). The most abundant species were Achelia hoekii and Nymphon australe.

A new species of Ammothea (Pycnogonida) and other pycnogonids from Livingston Island and surrounding waters (South Shetland Islands, Antarctica)

2001 ◽  
Vol 13 (2) ◽  
pp. 144-149 ◽  
Author(s):  
Tomás Munilla León
Keyword(s):  
New Species ◽  
Abundant Species ◽  
South Shetland Islands ◽  
Similar Species ◽  
Depth Range ◽  
Shetland Islands ◽  
West Antarctic ◽  
Livingston Island ◽  
The Family ◽  
A New Species

Fifty-nine species of pycnogonids belonging to sixteen genera and eight families were collected during a cruise near Livingston Island and surrounding waters, from depths between 0 and 1019 m. The new species Ammothea bentartica is described fully, illustrated and compared with similar species. The family Nymphonidae had both the greatest number of species (20) and number of specimens (67% of 1201). The most abundant species were Nymphon charcoti and N. australe. Nymphon paucidens and Pallenopsis buphtalmus were collected for a second time. The collections increased the geographical distribution of five species and the depth range of seven species. This collection appears typical of the West Antarctic zone.

A new species of Nagumoea (Bacillariophyta) from Antarctica, and a further consideration of the systematic position of the genus

Phytotaxa ◽  
2018 ◽  
Vol 349 (2) ◽  
pp. 152 ◽  
Author(s):  
BART VAN DE VIJVER ◽  
J. PATRICK KOCIOLEK
Keyword(s):  
New Species ◽  
Systematic Position ◽  
South Shetland Islands ◽  
Diatom Species ◽  
Maritime Antarctic ◽  
Morphological Comparison ◽  
Shetland Islands ◽  
Livingston Island ◽  
A New Species ◽  
Scanning Electron

Nagumoea livingstonensis sp. nov., a new diatom species is described from a coastal pool on the Maritime Antarctic Livingston Island, South Shetland Islands, based on light and scanning electron microscopy observations. A morphological comparison is made with the two other known Nagumoea taxa. The new species can be separated by the clear hyaline line between the valve face and mantle areolae, differences in the structure of its a scalariform valvocopula and broader fibulae.                The taxonomic position of the genus Nagumoea is discussed. A placement within the Rhopalodiales is doubtful based on the absence of clover-shaped areolae coverings in Nagumoea making the order of Bacillariales a more probable position.

scholarly journals Massalongia olechiana (Massalongiaceae, Peltigerales), a new lichen species from the Antarctic

2011 ◽  
Vol 32 (2) ◽  
pp. 117-121 ◽  
Author(s):  
Vagn Alstrup ◽  
Ulrik Søchting
Keyword(s):  
New Species ◽  
Antarctic Peninsula ◽  
Lichen Species ◽  
The Other ◽  
The Arctic ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
The Antarctic ◽  
A New Species

Massalongia olechiana (Massalongiaceae, Peltigerales), a new lichen species from the Antarctic A new species of lichenized ascomycete, Massalongia olechiana Alstrup et Søchting, sp. nov. (Massalongiaceae) is described from the South Shetland Islands and the Antarctic Peninsula. The species is distinguished by laminal isidia and 5-7-septate ascospores. The relationships with the other species of the genus are discussed. From Massalongia carnosa, recorded from both the Arctic and the Antarctic, the new species is distinguished by its lack of isidioid squamules and in having pluriseptate ascospores instead of 1-septate ascospores.

A description of a new species of Typhlotanais (Crustacea: Tanaidacea) from West Antarctic with a note on the genus

Zootaxa ◽  
2004 ◽  
Vol 535 (1) ◽  
pp. 1 ◽  
Author(s):  
MAGDALENA B½AÚEWICZ-PASZKOWYCZ
Keyword(s):  
New Species ◽  
South Shetland Islands ◽  
Shallow Waters ◽  
Male And Female ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
West Antarctic ◽  
The Antarctic ◽  
A New Species ◽  
Molar Process

The male and female of Typhlotanais grahami n. sp., from shallow waters (2 120 m) in Admiralty Bay (South Shetland Islands, the Antarctic) are described. The revision of Typhlotanais sensu lato is currently underway, and there are enough shared characters to place the new species in the same genus. The female of the new species is characterized by (1) a smooth carapace, as long as it is wide; (2) pereonites smoothly rounded laterally; (3) a rounded pleotelson; (4) an undulated, smooth, spineless mandible molar process; (5) nine terminal spiniform setae (two are fused together) on the maxillule; (6) a chela (propodus) of similar size to the carpus, and twice as long as it is wide; (7) a reduced proximal seta on the pleopodal endopod; (8) a uropod exopodite with one article, about 2/3 of the endopodal length, which is longer distally with a large basal part and a bend about a quarter of the way along its length.

A new aspidostomatid bryozoan from the Cape Melville Formation (Lower Miocene) of King George Island, West Antarctica

2004 ◽  
Vol 16 (3) ◽  
pp. 319-327 ◽  
Author(s):  
URSZULA HARA ◽  
J. ALISTAIR CRAME
Keyword(s):  
New Species ◽  
Colony Growth ◽  
Morphological Characters ◽  
South Shetland Islands ◽  
King George Island ◽  
West Antarctica ◽  
Shetland Islands ◽  
Sedimentary Sequences ◽  
Early Neogene ◽  
A New Species

Fragments of large, bilamellar aspidostomatid bryozoan colonies occur in Early Miocene glaciomarine sedimentary sequences of the Cape Melville Formation, King George Island, South Shetland Islands, West Antarctica. Investigation of the morphological characters of this aspidostomatid cheilostome shows that it represents a new species, which is described herein as Aspidostoma melvillensis sp. n. A combination of the colony-growth pattern, inferred co-occurring biota and associated sedimentary structures indicates a comparatively deep-water, outer shelf palaeoenvironmental setting. This Miocene occurrence of Aspidostoma melvillensis sp.n. emphasizes a biogeographical link with adjacent Southern Hemisphere regions during the early Neogene.

Integrative systematics of clathrinid sponges: morphological, reproductive and phylogenetic characterisation of a new species of Leucetta from Antarctica (Porifera, Calcarea, Calcinea) with notes on the occurrence of flagellated sperm

2018 ◽  
Vol 32 (4) ◽  
pp. 827 ◽  
Author(s):  
Ana Riesgo ◽  
Fernanda F. Cavalcanti ◽  
Nathan J. Kenny ◽  
Pilar Ríos ◽  
Javier Cristobo ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
South Shetland Islands ◽  
New Taxon ◽  
Shetland Islands ◽  
Morphological And Molecular Data ◽  
Integrative Systematics ◽  
First Time ◽  
A New Species

Our study reports on the occurrence of a new species of Leucetta (Calcinea, Calcarea) from the Southern Ocean, Leucetta giribeti, sp. nov., collected in the shallow waters (15m depth) of Deception Island, South Shetland Islands. This new taxon is described based on a combination of morphological and molecular data, including the description of oocytes, embryos, larvae and sperm found in the choanosome. While female reproductive elements showed great similarities with those of other calcineans, sperm is reported here for the first time in the whole Calcinea subclass. Sperm cells are flagellated and possess a typical spermatic mid-piece, which is usually observed in cnidarians. In our phylogenetic analyses, we recovered Leucetta giribeti, sp. nov. as sister species of a clade formed by species of the genera Leucetta, Pericharax and Leucettusa. Although the clade in which Leucetta giribeti, sp. nov. is placed is supported by molecular and morphological features, we cannot propose a new genus due to uncertainties regarding the type species of the genus, Leucetta primigenia Haeckel, 1872. Our study reinforces the relevance of integrative approaches in the description of new taxa and contributes to resolving the poorly known reproductive patterns of Antarctic sponge species.

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