A new species of the mud shrimp genus Axianassa Schmitt, 1924 (Decapoda: Gebiidea: Laomediidae) from the Ryukyu Islands, southern Japan

Zootaxa ◽  
2019 ◽  
Vol 4658 (3) ◽  
pp. 452-460
Author(s):  
TOMOYUKI KOMAI ◽  
YOSHIHISA FUJITA
Keyword(s):  
New Species ◽  
Rrna Gene ◽  
Ryukyu Islands ◽  
Single Male ◽  
Genetic Studies ◽  
Male Specimen ◽  
The Ryukyu Islands ◽  
Mud Shrimp ◽  
Accessible Habitat ◽  
A New Species

A new species of the laomediid mud shrimp genus Axianassa Schmitt, 1924, A. planioculus, is described and illustrated on the basis of a single male specimen from intertidal muddy sand flat of Kabira Bay, Ishigaki Island, southern Ryukyu Islands, Japan. Axianassa planioculus n. sp. is morphologically closest to A. mineri Boone, 1931, known from Pacific Panama, among the 11 known congeners, but is readily distinguished from the latter by the eyes being dorsally concealed by the rostrum, the subovate telson, the unarmed carpus of the maxilliped 3 and the unarmed uropodal endopod. The discovery of a new mud-shrimp species in an easily accessible habitat indicates that the shallow-water infaunal decapods are still relatively poorly known. A partial segment of the mitochondrial 16S rRNA gene was sequenced from the holotype for future genetic studies.

A new species of the laomediid mud shrimp genus Naushonia Kingsley, 1897 (Decapoda: Gebiidea) from Japan

Zootaxa ◽  
2020 ◽  
Vol 4816 (1) ◽  
pp. 92-100
Author(s):  
TOMOYUKI KOMAI ◽  
ISAO HIRABAYASHI
Keyword(s):  
New Species ◽  
French Polynesia ◽  
Central Japan ◽  
Single Male ◽  
Male Specimen ◽  
Kii Peninsula ◽  
Mud Shrimp ◽  
Japanese Waters ◽  
A New Species ◽  
Sea Coast

A new species of the laomediid mud shrimp genus Naushonia Kingsley, 1897, N. kiiensis, is described and illustrated on the basis of a single male specimen from Kii Peninsula, central Japan, at a sublittoral depth of 14 m. The new species is morphologically closest to N. serratipalma Komai & Anker, 2010, known from French Polynesia and the Red Sea coast of Saudi Arabia, among the 15 known congeners, but is distinguished from the latter by the spinulose middorsal and submedian gastric carinae on the carapace, the rugose posterior dorsum of the carapace, stronger but fewer spines on the distomesial lobe of the pereopod 1 merus and fewer spinules consisting of the serration of the palm lateral margin. From Japanese waters three species have been recorded, of which only N. japonica Komai, 2004 is known from the temperate mainland. The new species is the second occurring in the Japanese mainland. 

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. 

A new squat lobster species of the genus Munida (Decapoda, Anomura, Munididae) from the deep-sea off the Ryukyu Islands, Japan

Crustaceana ◽  
2017 ◽  
Vol 90 (7-10) ◽  
pp. 969-979
Author(s):  
Tomoyuki Komai
Keyword(s):  
New Species ◽  
Deep Sea ◽  
The Philippines ◽  
Ryukyu Islands ◽  
Single Male ◽  
Okinawa Island ◽  
Male Specimen ◽  
Squat Lobster ◽  
The Ryukyu Islands ◽  
Japanese Waters

Munida michaeli, a new species of deep-sea squat lobster (Munididae), is described and illustrated on the basis of a single male specimen collected off Okinawa Island, Ryukyu Islands, Japan, at depths of 641-650 m. It closely resemblesM. sacksiMacpherson, 1993 known with certainty only from the Philippines, but different spination of the carapace dorsum and the greatly reduced armature of the flexor margins of the ambulatory dactyli distinguish the new species from the latter. With the addition of the present new species, 41 species ofMunidaLeach, 1820 are now known from Japanese waters.

A new species of the genus Gabrius Stephens from Sweden (Coleoptera: Staphylinidae)

1997 ◽  
Vol 28 (1) ◽  
pp. 83-85
Author(s):  
Gösta Gillerfors
Keyword(s):  
New Species ◽  
Single Male ◽  
Male Specimen ◽  
Collection Data ◽  
A New Species

AbstractGabrius dufbergi sp. n. is described and illustrated from a single male specimen collected in the province of Scania (SkÅne), Sweden. Collection data are given.

A new natricine snake of the genus Amphiesma (Squamata: Colubridae: Natricinae) from the central Truong Son, Vietnam

Zootaxa ◽  
2006 ◽  
Vol 1225 (1) ◽  
pp. 39 ◽  
Author(s):  
THOMAS ZIEGLER ◽  
LE KHAC QUYET
Keyword(s):  
New Species ◽  
Slender Body ◽  
Mountain Range ◽  
New Taxon ◽  
Anal Plate ◽  
Single Male ◽  
Male Specimen ◽  
Central Vietnam ◽  
Eye Diameter ◽  
A New Species

A new species of Amphiesma is described from the Truong Son (Annamite mountain range) of Quang Binh Province in central Vietnam. This new species is characterized by the combination of the distinct coloration and pattern, the slender body and tail (tail/total length ratio 0.31), the large eye diameter, a single loreal and preocular, three postoculars, a single anterior and posterior temporal, nine supralabials (fourth to sixth reach the eye), nine infralabials, 179 ventrals (plus two preventrals), anal plate divided, 99 divided subcaudals, dorsal scales in 19-19-17 keeled rows, 34 maxillary teeth (the two posteriormost enlarged), hemipenis simple, with undivided sperm groove, covered with small spines except for a single, strongly enlarged spine next to the sperm groove at the hemipenis base and except for irregularly arranged medium-sized spines that encircle the organ horizontally at the trunco-pedicel area. The new taxon is known only from a single male specimen that was collected in a limestone forest valley.

A new species of Versicorpus Deschodt, Davis & Scholtz, 2011 (Scarabaeidae: Scarabaeinae: Byrrhidiini) from the Brandberg Mountain, Namibia

Zootaxa ◽  
2019 ◽  
Vol 4671 (1) ◽  
pp. 139-144
Author(s):  
CHRISTIAN M. DESCHODT ◽  
CATHERINE L. SOLE
Keyword(s):  
New Species ◽  
Dung Beetle ◽  
Body Parts ◽  
Single Male ◽  
Male Specimen ◽  
Current Definition ◽  
Constituent Species ◽  
Procavia Capensis ◽  
Definition Of ◽  
A New Species

The recently described dung beetle tribe Byrrhidiini currently comprises seven genera and nineteen species (Davis et al. 2019). During a recent collecting expedition to the Brandberg Mountain [S21.11° E14.69°] in Namibia, a single male specimen, together with various disarticulated body parts of a new species belonging to this tribe were collected. It was found amongst dried hyrax (Procavia capensis) dung pellets between large granite boulders. This new species clearly fits the current definition of the genus Versicorpus Deschodt, Davis & Scholtz, 2011. This raises the number of the constituent species of Versicorpus to three and that for Byrrhidiini to twenty. 

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.

Eriocheir ogasawaraensis Komai, a new species of mitten crab (Crustacea: Decapoda: Brachyura: Varunidae) from the Ogasawara Islands, Japan, with notes on the systematics of Eriocheir De Haan, 1835

Zootaxa ◽  
2006 ◽  
Vol 1168 (1) ◽  
pp. 1 ◽  
Author(s):  
T. KOMAI ◽  
I. YAMASAKI ◽  
S. KOBAYASHI ◽  
T. YAMAMOTO ◽  
S. WATANABE
Keyword(s):  
New Species ◽  
Russian Far East ◽  
Far East ◽  
Ryukyu Islands ◽  
Crab Species ◽  
Ogasawara Islands ◽  
Mitten Crab ◽  
The Ryukyu Islands ◽  
A New Species ◽  
The Russian Far East

A new mitten crab species of the genus Eriocheir De Haan, 1835, E. ogasawaraensis n. sp., is described from the Ogasawara Islands, Japan. It is morphologically most similar to E. japonica (De Haan, 1835), found on the Japanese mainland, the Ryukyu Islands, Taiwan, the Russian Far East, Korea and China, but diagnostic is the proportionately broader and dorsally flattened carapace which usually lacks the fourth anterolateral tooth, the ornamentation of the epistome, the male first gonopod and its the coloration. The biology of the new species and the different interpretations concerning the systematics of Eriocheir are briefly discussed.

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