scholarly journals Echinoderes xiphophorus sp. nov. – the first deep-water representative of Echinoderidae in the Sea of Japan (Kinorhyncha: Cyclorhagida)

2021 ◽  
Vol 773 ◽  
pp. 169-186
Author(s):  
Andrey V. Adrianov ◽  
Anastassya S. Maiorova
Keyword(s):  
Sea Of Japan ◽  
Deep Sea ◽  
Light And Electron Microscopy ◽  
The Sea Of Japan ◽  
North West ◽  
Trunk Segment ◽  
The Family ◽  
Segment 8 ◽  
A New Species ◽  
Trunk Segments

A new species of echinoderid kinorhynchs, Echinoderes xiphophorus sp. nov. collected from oxidized brown silt at the deepest depression in the Sea of Japan, North-West Pacific, is described and illustrated using light and electron microscopy. This new representative of the most speciose kinorhynch genus is characterized by the unique set of spines and tubes and can easily be distinguished from most of its congeners. The second trunk segment bears three pairs of tubes in subdorsal, midlateral and ventrolateral position in both sexes; one pair of tubes on trunk segment 5 in lateroventral position and on trunk segment 8 in sublateral position; aciculate lateroventral spines on trunk segments 6–9; aciculate middorsal spines on trunk segments 4, 6, 8. This species is well recognized by very long tergal extensions of the posteriormost segment, some of the longest within the family Echinoderidae. Males of Echinoderes xiphophorus sp. nov. are well distinguished from all the congeners by extremely long sword-like appendages dorsally to three pairs of penile spines. The species constitutes the first deep-sea representative of the Echinoderidae in the Sea of Japan and the deepest representative of the Kinorhyncha in this sea.

Metopelloides paguri sp. nov., a new species of symbiotic stenothoid amphipod (Crustacea: Amphipoda: Stenothoidae) associated with sublittoral hermit crabs from the Russian coasts of the Sea of Japan

Zootaxa ◽  
2012 ◽  
Vol 3244 (1) ◽  
pp. 59 ◽  
Author(s):  
IVAN MARIN ◽  
SERGEY SINELNIKOV
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
Hermit Crab ◽  
Hermit Crabs ◽  
The Sea Of Japan ◽  
Crab Species ◽  
Body Coloration ◽  
The Family ◽  
Mandibular Palp ◽  
A New Species

A new species of amphipod from the genus Metopelloides Gurjanova, 1938 (Crustacea: Amphipoda: Stenothoidae) asso-ciated with two species of sublittoral hermit crab species, Pagurus pectinatus (Stimpson, 1858) and Elassochirus cavi-manus (Miers, 1879) (Crustacea: Decapoda: Paguridae), is described from the Russian coasts of the Sea of Japan. The newspecies clearly differs from the congeners by the combination of morphological features such as telson without lateralspines, an elongated mandibular palp with single apical setae, the structures of distoventral palmar margins of subchelaon gnathopods I and II in females, bright white-red body coloration. Thus, the record of Metopelloides paguri sp. nov.represents the second record of the family Stenothoidae in the association with sublittoral hermit crabs from the Sea of Japan.

Review of the genera of the family Sagittidae with separation of a new subfamily and description of a new species of the genus Sagitta from the Sea of Japan (Chaetognatha)

2007 ◽  
Vol 16 (2) ◽  
pp. 157-162
Author(s):  
A.P. Kassatkina
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
The Family ◽  
A New Species

Diagnoses and lists of species are given for the genera of Sagittidae. A new subfamily Flaccisagittinae is established for the genera Flaccisagitta, Pseudosagitta, Accedosagitta, and Abosagitta. A new species, Sagitta sceptrum sp. n., is described from the Sea of Japan.

scholarly journals A new species of the genus Liljeborgia Spence Bate, 1862 (Crustacea: Amphipoda: Liljeborgiidae) associated with the burrows of the spoon worm Urechis unicinctus in the Sea of Japan

2020 ◽  
Author(s):  
Ivan Marin
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
Peter The Great Bay ◽  
Northwestern Pacific ◽  
The Sea Of Japan ◽  
Urechis Unicinctus ◽  
Peter The Great ◽  
The Family ◽  
The Usa ◽  
A New Species

A new symbiotic species of liljeborgiid amphipods, Liljeborgia associata sp. nov., is described from the burrows of the spoon worm Urechis unicinctus (Drasche, 1880) (Annelida: Polychaeta: Echiura: Urechidae) in the southern part of Peter the Great Bay and Posjeta Bay in the Sea of Japan. The new species is mostly similar and probably related to Liljeborgia geminata Barnard, 1969, known from the Californian coasts of the USA, and Liljeborgia serratoides Tzvetkova, 1967, described from Posjeta Bay in the Sea of Japan, but can be clearly distinguished from all congeners by morphological features of mouthparts, appendages and telson. The new species is only the fourth in the family Liljeborgiidae to be described from the Russian coast of the northwestern Pacific and the first in association with spoon worms (Echiura).

New species of the genus Sagitta sensu str. (Chaetognatha) from the Sea of Japan with description of an original staining and dissection technique

2008 ◽  
Vol 17 (1) ◽  
pp. 3-6
Author(s):  
A.P. Kassatkina
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
The World ◽  
Maturation Stages ◽  
Dissection Technique ◽  
A New Species ◽  
World Fauna

A detailed description, figures of a new species Sagitta sublica sp. nov. and the original techniques of research are presented. A key of species and subspecies of the world fauna of the Sagitta sensu str. Quoy et Gaimard, 1827 (for individuals at maturation stages III-V) is done.

A new species of the genus Careproctus (Liparidae) from the Sea of Japan

2011 ◽  
Vol 58 (4) ◽  
pp. 350-354 ◽  
Author(s):  
Yoshiaki Kai ◽  
Shinichiro Ikeguchi ◽  
Tetsuji Nakabo
Keyword(s):  
New Species ◽  
Sea Of Japan ◽  
The Sea Of Japan ◽  
A New Species

Review of the Septibranchia (Pelecypoda: Mollusca) from deep sea of Campos Basin, Brazil: family Verticordiidae, with description of a new species

2009 ◽  
Vol 90 (4) ◽  
pp. 809-817 ◽  
Author(s):  
Cléo Dilnei de Castro Oliveira ◽  
Ricardo Silva Absalão
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Depth Distribution ◽  
Brazilian Coast ◽  
Taxonomic Character ◽  
Campos Basin ◽  
Unknown Species ◽  
The Family ◽  
First Time ◽  
A New Species

Despite the increase in the number of deep-sea studies, little is known about the hadal molluscs. For Brazil, only a few studies have treated the Septibranchia. This contribution is part of an effort to increase the knowledge of this group off the Brazilian coast, although it is focused only on the Campos Basin (22°S), State of Rio de Janeiro. Four species of the family Verticordiidae are recognized here. ForSpinosipella tingaSimone & Cunha, 2008, the known depth distribution is extended to 1050 m. ForVerticordia woodiiSmith, 1885, previously reported from Brazil, the known distribution is extended southwards to the Campos Basin.Verticordia quadrataSmith, 1885, is reported from Brazil for the first time. A previously unknown species,Verticordia ouricurisp. nov., is described. The presence of small spines, typically with a hexagonal column and a stellate structure at their distal end emerges as an additional taxonomic character for the verticordiids.

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