A new deep-sea species of the caridean genus Bresilia Calman, 1896 (Crustacea: Decapoda: Bresiliidae) from Sagami Bay, central Japan

Zootaxa ◽  
2017 ◽  
Vol 4299 (3) ◽  
pp. 405
Author(s):  
TOMOYUKI KOMAI ◽  
HISANORI KOHTSUKA
Keyword(s):  
New Species ◽  
Shallow Water ◽  
Deep Sea ◽  
Ovigerous Female ◽  
Ventral Surface ◽  
Ryukyu Islands ◽  
Female Specimen ◽  
Sagami Bay ◽  
Central Japan ◽  
A New Species

A new species of the rare caridean genus Bresilia Calman, 1896, B. cinctus, is described and illustrated on the basis of a single ovigerous female specimen collected from Sagami Bay, central Japan, at 218–318 m depth. The new species is morphologically most similar to B. rufioculus Komai & Yamada, 2011, known only from shallow water cave of Ie Island (depths 14–17 m), Okinawa Islands, Ryukyu Islands, but many characters, including the proportionally shorter rostrum, the well developed suborbital lobe of the carapace, and the presence of a spiniform seta on the ventral surface of the pereopod 1 palm, immediately distinguish the new species from B. rufioculus. Bresilia cinctus n. sp. is the first species of the genus known from the Japanese main islands. The discovery of the new species led us to reassess the merit of the informal division of Bresilia proposed by Komai & Yamada (2010). An identification key to the ten named species of Bresilia is presented. 

A new deep-sea species of Epimeria Costa in Hope, 1851 (Amphipoda, Amphilochidea, Epimeriidae) from off southwestern Mexico

Zootaxa ◽  
2020 ◽  
Vol 4803 (1) ◽  
pp. 75-86
Author(s):  
I. WINFIELD ◽  
M.E. HENDRICKX
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Ovigerous Female ◽  
Eastern Pacific ◽  
Distal Margin ◽  
Ventral Margin ◽  
Female Specimen ◽  
The Pacific ◽  
The Pacific Ocean ◽  
A New Species

A single ovigerous female specimen of a new species of Epimeria Costa in Hope, 1851 was collected from deep sea, off southwestern Mexico, in the eastern Pacific. Epimeria karamani sp. nov., is most similar to females of E. cora J.L. Barnard, 1971, E. pacifica Gurjanova, 1995 and Epimeria morronei Winfield, Ortiz & Hendrickx, 2013. However, it differs from these species by: eyes long and slightly kidney-shaped; pleonite 3 strongly carinate, with dorsal tooth produced and acute; urosomite 1 with a wide mid-dorsal notch and a strong, upright blunt tooth; coxa 3 anterior margin slightly truncate and with two processes marginally; coxa 4 ventral margin linear, with facial granules and simple setae; gnathopods palm with distal bifid setae; telson straight medially, distal margin crenulate and with minute setae. The new species described herein increases the number of Epimeria species from the Pacific Ocean to 14, and from the eastern Pacific to three. 

Palaemonella shirakawai, a new species of shrimp (Crustacea: Decapoda: Palaemonidae), associated with burrow dwelling opistognathid fish from the Ryukyu Islands, Japan

Zootaxa ◽  
2017 ◽  
Vol 4299 (4) ◽  
pp. 521
Author(s):  
JUNJI OKUNO
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Ovigerous Female ◽  
Distal Margin ◽  
Ryukyu Islands ◽  
Female Specimen ◽  
Median Carina ◽  
The Ryukyu Islands ◽  
The Family ◽  
A New Species

A new palaemonid shrimp, Palaemonella shirakawai sp. nov., is described and illustrated on the basis of a single ovigerous female specimen captured from the Ryukyu Islands, Japan. It appears closest to P. aliska Marin by sharing the median carina of the carapace armed with dorsal rostral teeth extending posterior to the level of the hepatic tooth, but is immediately differentiated by the shorter rostrum, a rounded posterior margin of the telson, an elongate antennal scaphocerite with a truncate distal margin of lamella, and the longer second pereiopod. The present new species is an associate of burrow dwelling fishes belonging to the family Opistognathidae. 

A new species of the squat lobster genus Uroptychodes Baba, 2004 (Decapoda: Anomura: Chirostylidae) from Japan

Zootaxa ◽  
2021 ◽  
Vol 4966 (3) ◽  
pp. 349-358
Author(s):  
TOMOYUKI KOMAI
Keyword(s):  
New Species ◽  
Ovigerous Female ◽  
Identification Key ◽  
Key To Species ◽  
Central Japan ◽  
Squat Lobster ◽  
A New Species

A new species of the chirostylid squat lobster genus Uroptychodes Baba, 2004, U. fuscilineatus, is described and illustrated on the basis of a single ovigerous female from the Uraga Channel, central Japan, at depth of 250 m. The new species appears most similar to U. spinimarginatus (Henderson, 1885) and U. yapensis Dong, Gan & Li, 2021 among the 13 known congeners, but is notable in the pereopod 2 not being definitely more slender than the pereopods 3 and 4 and the remarkably spinose pereopods 1–4. A possible association of the new species with crinoid is suggested. An updated identification key to species of Uroptychodes is presented. 

scholarly journals Ashinkailepas kermadecensis, a new species of deep-sea scalpelliform barnacle (Thoracica: Eolepadidae) from the Kermadec Islands, southwest Pacific

Zootaxa ◽  
2009 ◽  
Vol 2021 (1) ◽  
pp. 57-65 ◽  
Author(s):  
JOHN S. BUCKERIDGE
Keyword(s):  
New Species ◽  
New Zealand ◽  
Deep Sea ◽  
Cold Water ◽  
The Other ◽  
Cold Seeps ◽  
Central Japan ◽  
Southwest Pacific ◽  
The North ◽  
A New Species

A new deep-sea stalked barnacle, Ashinkailepas kermadecensis sp. nov. has been recovered from a cold-water seep at depths of 1165 metres in the vicinity of the Kermadec Ridge to the northeast of the North Island, New Zealand. There are now two species of Ashinkailepas—the other, Ashinkailepas seepiophila Yamaguchi, Newman & Hashimoto, 2004, occurs in deep, cold seeps off central Japan. As there are two species within Ashinkailepas, formal diagnoses are provided for both taxa.

A new species of Trichopagurus de Saint Laurent (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu and Yap Islands, and redescription of T. trichophthalmus (Forest)

Zootaxa ◽  
2005 ◽  
Vol 801 (1) ◽  
pp. 1
Author(s):  
TOMOYUKI KOMAI ◽  
MASAYUKI OSAWA
Keyword(s):  
New Species ◽  
Hermit Crab ◽  
Type Species ◽  
Ventral Surface ◽  
Ryukyu Islands ◽  
Crab Species ◽  
The Ryukyu Islands ◽  
Gill Lamellae ◽  
A New Species

Discovery of a new hermit crab species from the Ryukyu Islands, Japan, led us to reexamine the holotype and supplemental specimens of Trichopagurus trichophthalmus (Forest), the type species of the heretofore monotypic Trichopagurus de Saint Laurent. Our examination has revealed that the gill lamellae of T. trichophthalmus are actually entire (= biserial), rather than shallowly divided distally (= quadriserial) as reported by de Saint Laurent (1970). The new species is assigned to Trichopagurus because of the 11 pairs of biserial gills, well-developed rostrum, moderately long male right sexual tube directed toward exterior, and the possession of a single left gonopore in female. The new species, T. macrochela n. sp., is distinguished from T. trichophthalmus primarily by the dorsoventrally flattened carpus with a distinctly delimited dorsomesial margin, less setose ambulatory legs, and markedly asymmetrical coxae of the female fifth pereopods, of which the left bears numerous setae on the ventral surface. It has been also shown that previous records of T. trichophthalmus from the Palau and Yap Islands are based on both true T. trichophthalmus and T. macrochela. A comparative, updated redescription of T. trichophthalmus is also provided.

scholarly journals A new species of the genus Cerviniopsis from Sagami Bay, Japan and reinstatement of the genus Neocervinia, with a report on the male of Neocervinia itoi Lee & Yoo, 1998 (Copepoda: Harpacticoida: Aegisthidae)

Zootaxa ◽  
2012 ◽  
Vol 3575 (1) ◽  
pp. 27 ◽  
Author(s):  
EUN-OK PARK ◽  
MOTOHIRO SHIMANAGA ◽  
SUK HYUN YOON ◽  
WONCHOEL LEE
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Distal Margin ◽  
Sexually Dimorphic ◽  
Sagami Bay ◽  
Genital Segment ◽  
Male Characters ◽  
Superficial Resemblance ◽  
Caudal Rami ◽  
A New Species

A new aegisthid copepod, Cerviniopsis reducta sp. nov. is described from the deep sea in Sagami Bay, Japan. The newspecies has superficial resemblance to C. minutiseta Ito, 1983 in the armature formula of swimming legs. However theydiffer from each other in the shape of setae of the swimming legs, the distal margin of operculum, length of caudal rami,and the location of setae on P5 exopod. Also, the male of Neocervinia itoi Lee & Yoo, 1998 is described on the basis ofsamples collected from around the type locality in Sagami Bay, Japan. Sexual dimorphism of N. itoi male can be observedin the fused rostrum, atrophied mouthparts, P5, and P6. The sixth leg is symmetrical and both gonopores are presumablyactive, based on the presence of two spermatophores internally in the genital segment. This paper reports for the first timeon the sexually dimorphic characters in the genus Neocervinia Huys, Mobjerg & Kristensen, 1997, reinstating its generic status with the newly revealed male characters.

A new species of the pontoniine shrimp genus Onycocaris Nobili, 1904 (Crustacea: Decapoda: Caridea: Palaemonidae) from Sagami Bay, central Japan

Zootaxa ◽  
2012 ◽  
Vol 3440 (1) ◽  
pp. 50
Author(s):  
TOMOYUKI KOMAI ◽  
ISAMU ITOU
Keyword(s):  
New Species ◽  
Species Group ◽  
Congeneric Species ◽  
Sagami Bay ◽  
Central Japan ◽  
Diagnostic Characters ◽  
Internal Cavities ◽  
Unidentified Species ◽  
Shallow Subtidal ◽  
A New Species

The pontoniine shrimp genus Onycocaris Nobili, 1904 currently contains 18 species, all known from the Indo-WestPacific. In this study, a new species of the genus, O. hayamaensis, is described and illustrated on the basis of fourovigerous female and three male specimens collected from Sagami Bay, central Japan, at shallow subtidal depths of5–6 m. The specimens lived in internal cavities of an unidentified species of a haliclonid sponge, Haliclona sp. Thisnew species is referred to the O. quadratophthalma (Balss, 1921) species group, represented by four species, i.e., O.balssi Bruce, 2011, O. fujinoi Bruce, 2011, O. quadratophthalma, and O. trullata Bruce, 1978. Differentiatingcharacters between the new species and the latter four species are discussed. The present new species exhibits strongsexual dimorphism in the second pereopods and heterochaely in the male second pereopods, though these traits are notfully documented in some of other congeneric species. Diagnostic characters derived from the second pereopods should be treated carefully.

A new species of the genus Philarius (Crustacea: Decapoda: Palaemonidae) from Ryukyu Islands, Japan

Zootaxa ◽  
2012 ◽  
Vol 3481 (1) ◽  
pp. 82
Author(s):  
MASAKO MITSUHASHI
Keyword(s):  
New Species ◽  
Scleractinian Coral ◽  
Ovigerous Female ◽  
Ryukyu Islands ◽  
A New Species

A new species of scleractinian coral associating pontoniine shrimp, Philarius rufulus sp. nov. is described and illustrated based on a single ovigerous female from Ryukyu Islands.

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