A new genus and new species of leucosiid crab (Crustacea: Decapoda: Brachyura) from coral reefs in the Indo-West Pacific

Zootaxa ◽  
2012 ◽  
Vol 3352 (1) ◽  
pp. 40 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
PETER K. L. NG
Keyword(s):  
New Species ◽  
Key Words ◽  
New Genus ◽  
Abdominal Cavity ◽  
Ryukyu Islands ◽  
Coral Rubble ◽  
West Pacific ◽  
Superficial Resemblance ◽  
The Ryukyu Islands ◽  
Female Abdomen

A new genus and new species of leucosiid crab, Coralliocryptus caementa n. sp., is described from Indo-West Pacific coralreefs in the Ryukyu Islands (Japan), Vanuatu, and Comoros. Although the new genus exhibits superficial resemblance to theIphiculidae in having prominent vertical spiniform teeth on the cutting edges of the chela and the female abdomen consisting offreely articulated somites, the deeply excavated female sterno-abdominal cavity, which is completely covered by the abdomen,unambiguously places this unique taxon in the Leucosiidae. The highly eroded, coral-rubble mimic carapace suggests somedegree of relationship between Coralliocryptus and some other ebaliinine genera, e.g., Alox Tan & Ng, 1995, Oreophorus Rüppel, 1830, Oreotlos Ihle, 1918.Key words: Crustacea, Decapoda, Brachyura, Leucosiidae, new genus, new species, Indo-West Pacific

Establishment of the Vultocinidae, a new family for an unusual new genus and new species of Indo-West Pacific crab (Crustacea: Decapoda: Brachyura: Goneplacoidea), with comments on the taxonomy of the Goneplacidae

Zootaxa ◽  
2007 ◽  
Vol 1558 (1) ◽  
pp. 39-68 ◽  
Author(s):  
PETER K.L. NG ◽  
MARIVENE R. MANUEL-SANTOS
Keyword(s):  
New Species ◽  
Abdominal Segment ◽  
New Genus ◽  
Abdominal Cavity ◽  
Sensu Stricto ◽  
West Pacific ◽  
New Family ◽  
Deep Waters ◽  
Locking Mechanism ◽  
The Press

A new family, Vultocinidae, is established for an unusual new genus and new species of crab (Crustacea: Brachyura: Goneplacoidea) here described from relatively deep waters in the central Philippines and Vanuatu. Although Vultocinus anfractus, new genus, new species, superficially resembles pilumnid genera like Lophoplax and pseudoziid genera like Planopilumnus in its deeply sculptured carapace and leg surfaces, its male abdomen and gonopods appear to affiiliate it with the Goneplacidae sensu lato instead. However, its suite of many unusual characters requires the recognition of a new family for Vultocinus. Comparisons of the Vultocinidae with the Goneplacidae sensu stricto suggests that the subfamily Mathildellinae, presently regarded as a subfamily, should be recognised as a full family; and two other problematic constituent genera, Progeryon and Conleyus, are also referred to their respective families in the Goneplacoidea. The genus Paragalene is also referred to the Progeryonidae. The extent of the sterno-abdominal cavity along the thoracic sternites, structure of the posterior thoracic sternites, position of the press button of the male abdominal locking mechanism and form of the first four male abdominal segment as characters in the taxonomy of the Goneplacoidea is also discussed.

A new species of the stenopodidean shrimp genus Odontozona Holthuis, 1946 (Crustacea: Decapoda: Stenopodidea: Stenopodidae) from the Ryukyu Islands, Indo-West Pacific

Zootaxa ◽  
2018 ◽  
Vol 4450 (4) ◽  
pp. 458
Author(s):  
TOMOMI SAITO ◽  
YOSHIHISA FUJITA
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Ryukyu Islands ◽  
West Pacific ◽  
The Third ◽  
Ascension Island ◽  
Pleural Surface ◽  
The Ryukyu Islands ◽  
A New Species ◽  
Submarine Caves

A new species of the stenopodidean shrimp genus Odontozona Holthuis, 1946 is described and illustrated on the basis of 3 specimens recently collected from submarine caves of Okinawa-jima and Ie-jima Islands, the Ryukyu Islands, southwestern Japan, Indo-West Pacific. Odontozona okunoi sp. nov. closely resembles O. anaphorae Manning & Chace, 1990 described from Ascension Island, South Atlantic Ocean, but differs from it by a combination of morphological characters, including the large cardiac spine on the carapace, the spines on the pleural surface, the posterior tooth of the telson, the irregular row of small spines on the dorsomesial surface of the third pereopod chela, as well as the length ratio of the third pereopod chela against carpus and merus. This study increases the total number of species described in the genus Odontozona to 21, nine of which occur the Indo-West Pacific. 

Stephanitis (Stephanitis) rhaphiolepidis sp. nov. (Hemiptera: Heteroptera: Tingidae) from Japan: First representative of the genus feeding on the evergreen rosaceous plant

2020 ◽  
Vol 17 (2) ◽  
pp. 36-47 ◽  
Author(s):  
JUN SOUMA
Keyword(s):  
New Species ◽  
Key Words ◽  
Host Plant ◽  
Natural Enemy ◽  
Ryukyu Islands ◽  
Lace Bug ◽  
The Ryukyu Islands ◽  
A New Species

A new species of the lace bug subgenus Stephanitis Stål, 1873 s. str. (Hemiptera: Heteroptera: Tingidae) is described under the name of S. (S.) rhaphiolepidis sp. nov. This new species has been found on the leaves of Rhaphiolepis indica (L.) Lindl. var. liukiuensis (Koidz.) Kitam. (Rosaceae) in the coastal evergreen broad-leaved scrub of Aguni Island, the Ryukyu Islands, Japan, and is the first representative of the genus feeding on the evergreen rosaceous plant. The host plant relationship and the deployment order of each of the hemelytral parts in the emergence are discussed for the new species. Stethoconus praefectus (Distant, 1909) (Hemiptera: Heteroptera: Miridae) is recorded as the natural enemy for the new species. Photographs of living individuals for the new species are provided. Key words: lace bug, taxonomy, new species, biology, host plant, natural enemy, emergence

A new genus and new species of alpheid shrimp from a marine cave in the Ryukyu Islands, Japan, with additional record of Salmoneus antricola Komai, Yamada & Yunokawa, 2015 (Crustacea: Decapoda: Caridea)

Zootaxa ◽  
2018 ◽  
Vol 4369 (4) ◽  
pp. 575 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
YOSHIHISA FUJITA
Keyword(s):  
New Species ◽  
New Genus ◽  
Original Description ◽  
Ryukyu Islands ◽  
New Taxon ◽  
Monotypic Genus ◽  
Diagnostic Characters ◽  
The Ryukyu Islands ◽  
Minor Form ◽  
Alpheid Shrimp

Two species of alpheid shrimp collected from a marine cave off Ie Island, Okinawa Islands, Ryukyu Islands, Japan, are reported. Caligoneus cavernicola n. gen., n. sp., is described on the basis of six specimens, including two ovigerous individuals. The new monotypic genus shares a number of features with Salmoneus Holthuis, 1955 and Triacanthoneus Anker, 2010; however, the dorsally elevated rostrum and the symmetrical pereopods 1 (= chelipeds) of “minor form” distinguish Caligoneus n. gen. from the latter two genera. Other potentially diagnostic characters between the new genus and the latter two genera are also discussed. The new taxon is clearly adapted to stygobiotic environments, with its reduced cornea and very slender elongate pereopods. In addition, two complete specimens of Salmoneus antricola Komai, Yamada & Yunokawa, 2015, collected in the same cave, supplement the original description of the species, which was based on a unique holotype with a damaged telson. 

Designation of Ancylomenes gen. nov., for the ‘Periclimenes aesopius species group’ (Crustacea: Decapoda: Palaemonidae), with the description of a new species and a checklist of congeneric species

Zootaxa ◽  
2010 ◽  
Vol 2372 (1) ◽  
pp. 85-105 ◽  
Author(s):  
J. OKUNO ◽  
A. J. BRUCE
Keyword(s):  
New Species ◽  
New Genus ◽  
Species Group ◽  
Ryukyu Islands ◽  
Congeneric Species ◽  
Orbital Margin ◽  
The Ryukyu Islands ◽  
Dorsal Process ◽  
Pacific Species ◽  
A New Species

A new genus of the subfamily Pontoniinae, Ancylomenes gen. nov. is established for the ‘Periclimenes aesopius species group’ of the genus Periclimenes Costa. The new genus is distinguished from other genera of Pontoniinae on account of the strongly produced inferior orbital margin with reflected inner flange, and the basicerite of the antenna armed with an angular dorsal process. Fourteen species have been previously recognized as belonging to the ‘P. aesopius species group’. One Eastern Pacific species (P. lucasi Chace), and two Atlantic species (P. anthophilus Holthuis & EiblEibesfeldt, and P. pedersoni Chace) are now also placed in Ancylomenes gen. nov. A further new species associated with a cerianthid sea anemone, A. luteomaculatus sp. nov. is described and illustrated on the basis of specimens from the Ryukyu Islands, southern Japan, and Philippines. A key for their identification, and a checklist of the species of Ancylomenes gen. nov. are provided.

A new genus and new species assigned to Macrophthalmidae (Decapoda: Brachyura: Thoracotremata) from the Ryukyu Islands, Japan

Zootaxa ◽  
2018 ◽  
Vol 4531 (1) ◽  
pp. 109 ◽  
Author(s):  
TOMOYUKI KOMAI ◽  
YOSHIHISA FUJITA
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Ryukyu Islands ◽  
Single Male ◽  
Male Specimen ◽  
Ishigaki Island ◽  
The Ryukyu Islands ◽  
The Family

Mirograpsus asper is described as a new genus and new species in the subfamily Ilyograpsinae Števčić, 2005, of the family Macrophthalmidae Dana, 1851, on the basis of a single male specimen from Ishigaki Island, Ryukyu Islands, Japan. The new genus most closely resembles the monotypic Apograpsus Komai & Wada, 2008 (type species, Ilyograpsus paantu Naruse & Kishino, 2006), sharing a similar carapace shape, but is differentiated chiefly by the fusion of the male pleomeres 4–6 and the unarmed meri of the ambulatory legs. The functional fusion of the male pleomeres 4–6 is unique in the Macrophthalmidae. 

New records of species of the Polyonyx sinensis group (Crustacea: Decapoda: Anomura: Porcellanidae) from Japan, the Philippines, Singapore, and Malaysia, with descriptions of two new species

Zootaxa ◽  
2018 ◽  
Vol 4429 (2) ◽  
pp. 303 ◽  
Author(s):  
MASAYUKI OSAWA ◽  
TOHRU NARUSE ◽  
PETER K. L. NG
Keyword(s):  
New Species ◽  
New Records ◽  
The Philippines ◽  
Peninsular Malaysia ◽  
Ryukyu Islands ◽  
West Pacific ◽  
Southern Japan ◽  
The Ryukyu Islands ◽  
Two New Species ◽  
Pacific Species

Five species of the genus Polyonyx Stimpson, 1858 are reported from southern Japan, the Philippines, Singapore, and Peninsular Malaysia. All of them belong to the P. sinensis group, which is morphologically defined by having the dactyli of the ambulatory legs each with the dorsal claw being much smaller than the ventral claw. Two species are described as new to science, one each from Peninsular Malaysia and the Ryukyu Islands in Japan, and their affinities are discussed. Polyonyx boucheti Osawa, 2007, P. heok Osawa & Ng, 2016, and P. thai Werding, 2001, are also newly reported from southern Japan, the Philippines, and Singapore. A key to the Indo-West Pacific species of the P. sinensis group is provided. 

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