Additional record of Rayllianassa amboinensis (de Man, 1888) from Japan, and description of a new species from Okinawa Island, Ryukyu Islands (Crustacea: Decapoda: Axiidea: Callianassidae)

Zootaxa ◽  
2014 ◽  
Vol 3835 (4) ◽  
pp. 549 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
YOSHIHISA FUJITA ◽  
TADAFUMI MAENOSONO
Keyword(s):  
New Species ◽  
Ryukyu Islands ◽  
Okinawa Island ◽  
De Man ◽  
A New Species

A new hermit crab species of the genus Catapagurus (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu Islands, southern Japan

Zootaxa ◽  
2009 ◽  
Vol 2211 (1) ◽  
pp. 57-68 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
MASAYUKI OSAWA
Keyword(s):  
New Species ◽  
Hermit Crab ◽  
Species Group ◽  
Shallow Waters ◽  
Ryukyu Islands ◽  
Crab Species ◽  
Okinawa Island ◽  
The Ryukyu Islands ◽  
The Family ◽  
A New Species

A new species of the pagurid hermit crab genus Catapagurus A. Milne-Edwards, 1880, C. insolitus, is described and illustrated based on specimens from shallow waters in Okinawa Island, the Ryukyus. It belongs to an informal species group characterized by the possession of blade-shaped ambulatory dactyli, and is morphologically most similar to C. kosugei (Asakura, 2001). However, the new species is unique within the genus in having a multispinose antennal acicle, rarely seen in species of the family Paguridae.

Halosbaena okinawaensis, a new species of Thermosbaenacea (Crustacea) from submarine cave on Okinawa Island, Ryukyu Islands, southwestern Japan

Zootaxa ◽  
2017 ◽  
Vol 4317 (1) ◽  
pp. 155 ◽  
Author(s):  
MICHITAKA SIHMOMURA ◽  
YOSHIHISA FUJITA
Keyword(s):  
New Species ◽  
Dorsal Surface ◽  
Ryukyu Islands ◽  
Okinawa Island ◽  
Submarine Cave ◽  
Exopod Segment ◽  
A New Species

A new thermosbaenacean, Halosbaena okinawaensis sp. nov. is described from a submarine cave in Okinawa Island, Ryukyu Islands, southwestern Japan. The species differs from its congeners in having a subtrapezoidal exopod segment 1 of pereiopods 2–6, a curved penial lobe, and a telson with a pair of simple macrosetae subdistally on dorsal surface. 

A new species of the axiid shrimp genus Manaxius Kensley, 2003 (Decapoda: Axiidea) from shallow coral reefs of the western Pacific

Zootaxa ◽  
2020 ◽  
Vol 4858 (4) ◽  
pp. 507-520
Author(s):  
TOMOYUKI KOMAI ◽  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
French Polynesia ◽  
Dorsal Margin ◽  
Ryukyu Islands ◽  
Society Islands ◽  
The Ryukyu Islands ◽  
Female Holotype ◽  
De Man ◽  
A New Species

Manaxius paullus, a new species of axiid burrowing shrimp, is described on the basis of a female holotype from the Society Islands, French Polynesia, and a female paratype from the Ryukyu Islands, Japan. Both specimens were collected on shallow coral reefs. The new species is morphologically closest to five of 17 congeners, viz., M. euophthalmus (de Man, 1905), M. izuensis (Komai, 2011), M. mimasensis (Sakai, 1967), M. poupini (Komai, 2016) and M. supia Poore, 2020, but can be separated from all of them by the rostrum being relatively broad and with one pair of lateral spines, in addition to a pair of supraocular spines; the presence of a subdistal spine on the dorsal margin of the cheliped ischium; the presence of additional three or four small spines on each cheliped palm, adjacent to the dorsal margin; and the lack of a spine near the base of the fingers of each cheliped palm. 

Comanthus kumi, a new shallow-water comatulid (Echinodermata: Crinoidea: Comatulida: Comasteridae) from the Ryukyu Islands, Japan

Zootaxa ◽  
2012 ◽  
Vol 3367 (1) ◽  
pp. 261 ◽  
Author(s):  
YOSHIHISA FUJITA ◽  
MASAMI OBUCHI
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Shallow Water ◽  
Small Hole ◽  
Ryukyu Islands ◽  
Okinawa Island ◽  
The Ryukyu Islands ◽  
A New Species

A new species of the genus Comanthus A.H. Clark, 1908, is described on the basis of specimens collected from KumeIsland and Okinawa Island, the Ryukyu Islands, Japan. Comanthus kumi n. sp. is distinguished from all ten congeners byhaving extremely elongate arms exceeding 300 mm in length and the colouration in life. The new species concealed itswhole body in a crevice or small hole on coral reefs during the day and protruded only several elongate arms on the reef surface at night. This habit suggests that the new species is nocturnal.

Redescription of the poorly known ghost shrimp species, Scallasis amboinae Bate, 1888, review of the genus, and description of a new species from the Ryukyu Islands, Japan (Decapoda: Axiidea: Callianassidae)

Zootaxa ◽  
2020 ◽  
Vol 4766 (3) ◽  
pp. 401-420
Author(s):  
TOMOYUKI KOMAI ◽  
GARY C. B. POORE ◽  
YOSHIHISA FUJITA
Keyword(s):  
New Species ◽  
Papua New Guinea ◽  
New Guinea ◽  
Ryukyu Islands ◽  
Shrimp Species ◽  
Ghost Shrimp ◽  
The Ryukyu Islands ◽  
New Material ◽  
De Man ◽  
A New Species

A poorly known callianassid ghost shrimp species, Scallasis amboinae Bate, 1888, is redescribed and illustrated on the basis of the holotype and new material from Papua New Guinea. A new species, S. inermis, is described from the Ryukyu Islands, Japan. Callianassa (Cheramus) pygmaea De Man 1928 is synonymised with S. amboinae. All seven species of Scallasis are diagnosed and compared. 

scholarly journals A new species of Egglestonichthys (Teleostei, Gobiiformes, Gobiidae) from Okinawa Island, Japan

ZooKeys ◽  
2020 ◽  
Vol 1006 ◽  
pp. 91-98
Author(s):  
Kyoji Fujiwara ◽  
Toshiyuki Suzuki ◽  
Hiroyuki Motomura
Keyword(s):  
New Species ◽  
Ryukyu Islands ◽  
Pectoral Fin ◽  
Okinawa Island ◽  
Bright Yellow ◽  
Interorbital Width ◽  
Fin Ray ◽  
Fin Rays ◽  
Zigzag Pattern ◽  
A New Species

Egglestonichthys fulmensp. nov. (Teleostei: Gobiidae) is described on the basis of a single specimen (21.7 mm in standard length) collected from 250 m depth off Okinawa Island, Ryukyu Islands, Japan. The new species is characterized by the following combination of characters: anal-fin rays I, 9; pectoral-fin rays 17, lower rays not free from membrane; longitudinal scale series 25; transverse scales 8; pre-dorsal-fin scale rows 8; cheek and opercle naked; pelvic frenum absent; caudal fin lanceolate, its length 32.2% of SL; interorbital width very narrow, 1.2% of HL (much narrower than pupil diameter); no spicules or odontoid processes on outer surface of gill arches; and body whitish, upper half with broken zigzag pattern of bright yellow patches and associated scattered black melanophores in fresh specimens (melanophores retained in preserved specimens). Several characters, including pectoral-fin ray count, interorbital width, and coloration uniquely distinguish the new species from congeners.

A new species of Leptoplectus Casey from Ryukyu Islands, Japan, with comments on morphology of integumental structures in Euplectitae (Coleoptera, Staphylinidae, Pselaphinae)

Zootaxa ◽  
2021 ◽  
Vol 4915 (3) ◽  
pp. 411-423
Author(s):  
PAWEŁ JAŁOSZYŃSKI ◽  
SHÛHEI NOMURA
Keyword(s):  
New Species ◽  
Identification Key ◽  
Palaearctic Region ◽  
Ryukyu Islands ◽  
Okinawa Island ◽  
Incertae Sedis ◽  
A New Species

Leptoplectus kijimunaa Jałoszyński & Nomura, sp. n. is described, based on a series of specimens collected on Okinawa Island, Japan. Morphological structures of the new species are illustrated in detail and compared to known characters of all remaining 14 congeners. As the diagnosis of Leptoplectus remains unclear, character variability within known species is discussed. It is concluded that within Palaearctic region, the bilobed labrum is a reliable character to distinguish this genus from other Euplectini. The placement of Labroplectus Kurbatov, treated as incertae sedis within the tribe Trichonychini in the latest edition of the Catalogue of Palaearctic Coleoptera, is verified and it is concluded that it should be maintained in Euplectini. An identification key to genera of northeastern Asian Euplectini is given. We also comment on outdated and inaccurate morphological nomenclature still broadly used in descriptions of new Pselaphinae taxa. 

Confirmation of Upogebia Pugnax De Man, 1905 From Japan (Decapoda, Thalassinidea)

Crustaceana ◽  
1995 ◽  
Vol 68 (3) ◽  
pp. 382-389
Author(s):  
Katsushi Sakai
Keyword(s):  
New Species ◽  
Adult Specimen ◽  
De Man ◽  
A New Species

AbstractAn adult specimen of Upogebia pugnax is described, and the occurrence of the species in Japan is confirmed. New Caledonian specimens previously assigned to U. pugnax probably belong to a new species.

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