scholarly journals Thoridae (Crustacea: Decapoda) can penetrate the Abyss: a new species of Lebbeus from the Sea of Okhotsk, representing the deepest record of the family

2020 ◽  
Author(s):  
Ivan Marin
Keyword(s):  
New Species ◽  
Deep Water ◽  
Sea Of Okhotsk ◽  
Morphological Features ◽  
Similar Morphology ◽  
The Sea Of Okhotsk ◽  
Kuril Basin ◽  
The Family ◽  
A New Species

Lebbeus sokhobio sp. nov. is described from abyssal depths (3303−3366 m) in the Kuril Basin of the Sea of Okhotsk. The related congeners are deep-water dwellers with a very distant distribution and very similar morphology. The new species is separated by minor morphological features, such as the armature of the rostrum and telson, meral spinulation of ambulatory pereiopods and the shape of the pleonal pleurae. This species is the deepest dwelling representative of the genus Lebbeus and the family Thoridae. A list of records of caridean shrimps recorded from abyssal depths below 3000 m is given.

Esperiopsis koltuni sp. nov. (Demospongiae: Poecilosclerida: Esperiopsidae), a carnivorous sponge from deep water of the Sea of Okhotsk (North Pacific)

2007 ◽  
Vol 87 (6) ◽  
pp. 1379-1386 ◽  
Author(s):  
Alexander V. Ereskovsky ◽  
Philippe Willenz
Keyword(s):  
New Species ◽  
Deep Water ◽  
Sea Of Okhotsk ◽  
Distal Part ◽  
Growth Form ◽  
Prey Capture ◽  
The Sea Of Okhotsk ◽  
Larval Skeleton ◽  
A New Species ◽  
Aquiferous System

Esperiopsis koltuni, a new species of the sponge family Esperiopsidae, is described from deep water of the Sea of Okhotsk. The new species has a unique growth form: there is a basal plate with radiating cylindrical branches, whose oval flat distal parts bear filament-like outgrowths. Megascleres are arranged differently in the main part of branches and in their distal flat parts. The dermal membrane contains isochelae with protruding alae and abundant sigmancistras. Microscleres are represented by large anchorate spatuliferous isochelae, small isochelae, sigmas and sigmancistras. Esperiopsis koltuni sp. nov. is hermaphroditic, with parenchymella larva. The larval skeleton consists only of sigmas and sigmancistras. Esperiopsis koltuni sp. nov. can be easily distinguished from other Esperiopsis species by dimensions and combination of spicule types. In particular, it is the only species in the genus with three different size categories of styles. The new species lacks the aquiferous system, has a characteristic body plan with symmetrical lateral expansions, an unusual arrangement of microscleres in the dermal membrane and true sigmancistras. Moreover, prey capture by a filament-like outgrowth of the flat distal part was observed. All of these characteristics indicate that Esperiopsis koltuni sp. nov. is a carnivorous sponge.

A new species of Microcosmus (Tunicata: Ascidiacea: Bolteniidae) from the Sea of Okhotsk

2021 ◽  
Vol 30 (2) ◽  
pp. 271-278
Author(s):  
K.E. Sanamyan ◽  
N.P. Sanamyan ◽  
T.B. Morozov
Keyword(s):  
New Species ◽  
Sea Of Okhotsk ◽  
First Record ◽  
Northwestern Pacific ◽  
The Sea Of Okhotsk ◽  
The Family ◽  
Solitary Ascidian ◽  
A New Species

A large solitary ascidian Microcosmus armatus sp. nov., described from the Sea of Okhotsk, represents the first record of the genus Microcosmus Heller, 1877 in the cold waters of the Northwestern Pacific. The genus belongs to the family Bolteniidae formerly known as Pyuridae.

Polysertularella polyseriata, a new genus and species of hydroid (Hydrozoa; Leptothecata; Sertulariidae) from the Sea of Okhotsk

Zootaxa ◽  
2011 ◽  
Vol 3107 (1) ◽  
pp. 59
Author(s):  
ALEXANDER ANTSULEVICH
Keyword(s):  
Differential Diagnosis ◽  
Sea Of Okhotsk ◽  
Type Species ◽  
New Genus ◽  
New Genera ◽  
New Genus And Species ◽  
The Sea Of Okhotsk ◽  
The Family ◽  
Stem Type ◽  
A New Species

Polysertularella polyseriata, gen. et sp. nov., a hydroid referable to family Sertulariidae, is described from the eastern part of the Sea of Okhotsk. The new taxa is characterized by: multi-serial (5–8 rows) placement of hydrothecae on both stem and branches; a hydrothecal rim with four small cusps; an operculum with four equal flaps similar to but more flattened than that of Sertularella. Gonothecae are transversely corrugated and resemble those of many species assigned to Sertularella and Symplectoscyphus. They arise from hydrothecae-like tubes on the basal part of the stem and are disposed in opposite pairs, as in species of Synthecium.Sertulariidae, the largest family in Hydrozoa and with representatives from marine environments worldwide, is relatively well known. Discovery of new genera in the family is relatively infrequent. A diagnosis of a new genus and a description of a new species are given in this paper.Diagnosis. Sertulariidae with erect, branched colonies, with branches resembling hydrocaulus. Hydrothecae arranged in 5–8 longitudal rows along hydrocaulus and branches; hydrothecal rim with four very low cusps separated by shallow embayments; operculum of four equal triangular valves, flattened rather than pyramidal; hydranth with abcauline caecum. Gonothecae oval with strong transverse corrugations and rings, occurring in opposite pairs on lower part of stem. Type species. Polysertularella polyseriata, sp. n., designated herein. Notes and differential diagnosis. In most genera of Sertulariidae, hydrothecae have an alternate to opposite biserial arrangement on branches, and especially on the stem. A few genera in the family, including Abietinaria Kirchenpauer, 1884, Thuiaria Fleming, 1828, Sertularia Linnaeus, 1758, and Staurotheca Allman, 1888 include some species with multi-serial rows of hydrothecae on branches and very rarely on the stem as well. The nominal genus Selaginopsis Allman, 1876, originally established for sertulariids having hydrothecae in more than two longitudinal rows, is no longer recognized as valid in some works because of its artificial composition and differences among included species in operculum structure (Peña-Cantero et al., 1997). However, no species with a multiserial arrangement of hydrothecae and four-flapped operculum (resembling Sertularella) has been known in the family until now.

A new species of Characella Sollas, 1886 (Tetractinellida; Demospongiae; Porifera) from deeper waters off the coast of Brazil

Zootaxa ◽  
2019 ◽  
Vol 4559 (1) ◽  
pp. 196
Author(s):  
ALAN DIAS ◽  
GEORGE GARCIA SANTOS ◽  
ULISSES PINHEIRO
Keyword(s):  
New Species ◽  
Deep Water ◽  
Rio Grande ◽  
Northeastern Brazil ◽  
Brazilian Coast ◽  
The Family ◽  
The World ◽  
A New Species

Sponges of the Family Pachastrellidae Carter, 1875 are distributed worldwide and found generally in deep water. Up to date, only four species are known for the Brazilian coast (Muricy 2018): Characella aspera Sollas, 1886, C. capitolii Mothes et al. 2007, C. pachastrelloides (Carter, 1876), and Pachastrella monilifera Schmidt, 1868. In this study, a new species of Characella is described from the mesophotic zone off Bacia Potiguar (Rio Grande do Norte State, Northeastern Brazil). The specimen was preserved in 80% ethanol and deposited in the Porifera Collection of the Universidade Federal de Pernambuco (UFPEPOR). Taxonomic comparisons were made with data tabulated for all species of Characella available in the World Porifera Database (van Soest et al. 2018). 

Sabellaria jeramae, a new species (Annelida: Polychaeta: Sabellariidae) from the shallow waters of Malaysia, with a note on the ecological traits of reefs

Zootaxa ◽  
2015 ◽  
Vol 4052 (5) ◽  
pp. 555 ◽  
Author(s):  
EIJIROH NISHI ◽  
KANAKO MATSUO ◽  
MARIA CAPA ◽  
SHINRI TOMIOKA ◽  
HIROSHI KAJIHARA ◽  
...  
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Intertidal Zone ◽  
Morphological Features ◽  
Shallow Waters ◽  
Congeneric Species ◽  
Ecological Traits ◽  
The Family ◽  
The World ◽  
A New Species

A new species of the genus Sabellaria Lamarck, 1818 (Annelida: Polychaeta: Sabellariidae) is described from the intertidal zone of Jeram, Selangor, Malaysia. Sabellaria jeramae n. sp. is a gregarious species that constructs large reefs several hundreds of meters long and 50–200 m wide. The new species is distinguished from other congeners by the character combination of the presence of a single kind of middle paleae with conspicuous morphology, and outer paleae with long frayed teeth. Morphological features of the species are described and compared to those of all congeneric species. We also compare the reef structure and geographical distribution of the new species to those of the members of the family Sabellariidae around the world, demonstrating the ecological traits of the reefs. 

A new species of deep-water triplefin (Pisces: Tripterygiidae) in the genus Ruanoho from coastal New Zealand waters

Zootaxa ◽  
2021 ◽  
Vol 4981 (1) ◽  
pp. 123-136
Author(s):  
ANDREW L. STEWART ◽  
STEEN W. KNUDSEN ◽  
KENDALL D. CLEMENTS
Keyword(s):  
New Species ◽  
New Zealand ◽  
Deep Water ◽  
Bright Yellow ◽  
The Family ◽  
History Of ◽  
Anterior Body ◽  
Shelf Region ◽  
The Relationship ◽  
A New Species

A new endemic species of triplefin Ruanoho scurra is described from deep water (108–216 m) on the shelf region around coastal New Zealand (Northland to Stewart Island). It is differentiated from its congeners by the combination of fresh colour (bright yellow spots on the head and anterior body, oblique lines on the dorsal and anal fins, and sub-vertical lines on the caudal) as well as some proportional measurements. Comments are made on the relationship with its congeners, and evolutionary history of the family in New Zealand waters, along with observations on the habitat in which this new species is found. This paper formally describes the species first mentioned in Stewart & Clements 2015:1523 as the polkadot triplefin. 

scholarly journals A new species of sea squirt Rhopalaea bilobata (Ascidiacea: Diazonidae) from the Andaman Islands, India

2017 ◽  
Vol 9 (5) ◽  
pp. 10187
Author(s):  
Jhimli Mondal ◽  
C. Raghunathan ◽  
Tamal Mondal
Keyword(s):  
New Species ◽  
Morphological Features ◽  
Depth Range ◽  
Andaman Islands ◽  
Artificial Structures ◽  
Sea Squirt ◽  
The Family ◽  
A New Species

Rhopalaea bilobata, a new species of the class Ascidiacea, under the family Diazonidae has been described from the Andaman Islands of Andaman & Nicobar, India.  The species was found in sandy bottoms, reef areas and artificial structures at a depth range of 10–40 m.  This species has bilobed anal border, six lobed branchial and atrial siphons, transparent thorax with pigmented spots at the anus, between the two siphons and at the anterior end of endostyle, and ramified basal test.  The species is closely related to R. idoneta, R. macrothorax and R. tenuis in several sets of anatomical and morphological features.

A new species of the pandalid shrimp genus Pandalus (Crustacea: Decapoda: Caridea) from the Sea of Okhotsk off eastern Sakhalin, Russian Far East

Zootaxa ◽  
2008 ◽  
Vol 1882 (1) ◽  
pp. 46
Author(s):  
TOMOYUKI KOMAI ◽  
MARIA ELETSKAYA
Keyword(s):  
New Species ◽  
Sea Of Okhotsk ◽  
Small Body ◽  
Russian Far East ◽  
Far East ◽  
Important Species ◽  
The Sea Of Okhotsk ◽  
Commercially Important ◽  
A New Species ◽  
Specific Identity

A new species of the pandalid shrimp genus Pandalus Leach, 1814, Pandalus ivanovi n. sp., is described on the basis of material from the Sea of Okhotsk off eastern Sakhalin, at depths of 150–200 m. It is morphologically closest to Pandalus hypsinotus Brandt, 1851, a commercially important species widely distributed in the northern North Pacific. Because of the strong similarities between the new species and P. hypsinotus, we have examined syntypes of the latter species in order to confirm the specific identity. The new species can be distinguished from P. hypsinotus by the more strongly upturned rostrum, the relatively low postrostral ridge on the carapace, fewer carpal articles of the left second pereopod and the small body size. The coloration in life is also different between the two. There is an indication of protandry in the new species, like other congeneric species.

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