The copepod genus Hatschekia Poche, 1902 (Siphonostomatoida: Hatschekiidae) from triggerfishes (Pisces: Tetraodontiformes: Balistidae) from off the Ryukyu Islands, Japan, with descriptions of eleven new species

Zootaxa ◽  
2010 ◽  
Vol 2478 (1) ◽  
pp. 1 ◽  
Author(s):  
DAISUKE UYENO ◽  
KAZUYA NAGASAWA
Keyword(s):  
New Species ◽  
Coastal Waters ◽  
Morphological Characters ◽  
Ryukyu Islands ◽  
Body Parts ◽  
Caudal Ramus ◽  
The Ryukyu Islands

Eleven new species of the genus Hatschekia Poche, 1902 (Copepoda: Siphonostomatoida: Hatschekiidae) are described based on female specimens from triggerfishes (Tetraodontiformes: Balistidae) caught in coastal waters of the Ryukyu Islands, Japan. These include Hatschekia hemicyclium n. sp. on Rhinecanthus rectangulus (Bloch & Schneider), R. aculeatus (L.) and R. verrucosus (L.); H. jonesi n. sp. on Sufflamen bursa (Bloch & Schneider) and S. fraenatum (Latreille); H. kabatai n. sp. and H. izenaensis n. sp. on Xanthichthys lineopunctatus (Hollard); H. churaumi n. sp. on Pseudobalistes flavimarginatus (Rüppell); H. zanpa n. sp. and H. fukurubi n. sp. on Balistapus undulatus (Park); H. mongarah n. sp. on Balistoides conspicillum (Bloch & Schneider); H. nakamurai n. sp. on Melichthys vidua (Richardson); H. mihkagan n. sp. on Odonus niger (Rüppell); and H. pseudobalistesi n. sp. on Pseudobalistes fuscus (Bloch & Schneider). Ten of the 11 new species, with the exception of H. fukurubi n. sp., share the intercoxal sclerites of legs 1 and 2 armed with 4 processes. This character differs from 87 of the known 97 species in Hatschekia. Of the 20 species with this character, the 10 new species are separated from each other mainly by the following morphological characters: the number of setal elements in the leg armature, on the antennule and the caudal ramus, the presence of posterior lobes on the trunk, the segmentation and form of the abdomen, and the length ratios of certain body parts.

A review ofLeptocarisincluding a description ofL. ryukyuensissp. nov. (Copepoda: Harpacticoida: Darcythompsoniidae)

2011 ◽  
Vol 92 (5) ◽  
pp. 1073-1081 ◽  
Author(s):  
Sung Joon Song ◽  
Hans-Uwe Dahms ◽  
Jong Seong Khim
Keyword(s):  
New Species ◽  
East Asia ◽  
Sandy Beach ◽  
Endopodal Segment ◽  
Ryukyu Islands ◽  
Caudal Ramus ◽  
The Third ◽  
The Ryukyu Islands

We provide a review on scientific contributions concerned withLeptocaris(Harpacticoida: Copepoda) that includes the zoogeography, ecology, biology, and morphology of this genus. A tabular key is given to aid in the identification of theignavus-group.Leptocaris ryukyuensissp. nov. is included on the basis of specimens collected from Akeijima sandy beach of the Ryukyu Islands in Japan. The new species can be distinguished from its congeners by an abexopodal seta and 3 exopodal setae on A2, a barbed inner seta on the proximal, endopodal segment of female P1 to P3, setae of the caudal ramus (setae I and II are very small, and the basal seta is transformed to a big spine), and modified inner setules of P2 enp-2 and P3 enp-2 in the males. The new species belongs to theignavus-group established by Kunz (1994) and is the third species of the genusLeptocarisin East Asia.

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. 

A taxonomic review of the genus Physopelta (Hemiptera: Heteroptera: Largidae) from Japan, Korea, and Taiwan, with a new record of Ph. parviceps from China

Zootaxa ◽  
2021 ◽  
Vol 4951 (3) ◽  
pp. 461-491
Author(s):  
JUN SOUMA ◽  
TADASHI ISHIKAWA
Keyword(s):  
New Species ◽  
New Record ◽  
Guangdong Province ◽  
Zhejiang Province ◽  
Ryukyu Islands ◽  
Taxonomic Review ◽  
The Ryukyu Islands ◽  
Two New Species ◽  
Central Taiwan ◽  
First Time

In this paper, we revised the physopeltine genus Physopelta Amyot & Serville, 1843 (Hemiptera: Heteroptera: Largidae) from Japan, Korea, and Taiwan. Five species were recognized and diagnosed, including two new species, Ph. (Neophysopelta) lutaspidata sp. nov. from northern and central Taiwan and Ph. (N.) fusciscutellata sp. nov. from the Ryukyu Islands, Japan and Taiwan, and three known species, Ph. (N.) gutta gutta (Burmeister, 1834), Ph. (N.) parviceps Blöte, 1931, and Ph. (N.) quadriguttata Bergroth, 1894. Physopelta (Neophysopelta) fusciscutellata sp. nov., was previously regarded as either of the two species, Ph. (N.) cincticollis Stål, 1863 and Ph. (N.) parviceps, for populations from Taiwan. Previous records of Ph. (N.) cincticollis from Japan proper and Korea, and Ph. (N.) slanbuschii (Fabricius, 1787) from the Ryukyu Islands were considered as misidentifications of Ph. parviceps. A key to facilitate the identification of the five species known in Japan, Korea, and Taiwan is provided. Additionally, Ph. (N.) parviceps is recorded from China (Guangdong Province and Zhejiang Province) for the first time. 

scholarly journals Phyllodiaptomus (Phyllodiaptomus) roietensis, a new diaptomid copepod (Copepoda, Calanoida) from temporary waters in Thailand and Cambodia, with a key to the species

ZooKeys ◽  
2020 ◽  
Vol 911 ◽  
pp. 1-20
Author(s):  
La-Orsri Sanoamuang ◽  
Santi Watiroyram
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Water Bodies ◽  
Temporary Waters ◽  
Caudal Ramus ◽  
Temporary Water Bodies ◽  
Temporary Water ◽  
The Right ◽  
Northeastern Thailand

Phyllodiaptomus (Phyllodiaptomus) roietensissp. nov. was collected from temporary water bodies in Roi Et and Nakhon Ratchasima provinces in northeastern Thailand and Kampong Thom Province in central Cambodia. The new species is closely related to Phyllodiaptomus (P.) surinensis Sanoamuang & Yindee, 2001 in that it shares common morphological characters in the males: urosomites 2–3, P5 intercoxal sclerite, right P5 Exp-2, and left P5 Exp. Minor differences on the right antennule, right caudal ramus, P5 basis and Enp exist. The females differ in their Pdg 5, genital double-somite, and P5. An updated key to the species of the genus Phyllodiaptomus Kiefer, 1936 is provided.

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.

Discoveries of the genera Baeochila and Idiocysta from Japan, with descriptions of two new species (Hemiptera: Heteroptera: Tingidae)

Zootaxa ◽  
2020 ◽  
Vol 4731 (3) ◽  
pp. 388-402 ◽  
Author(s):  
JUN SOUMA
Keyword(s):  
New Species ◽  
Host Plant ◽  
Ryukyu Islands ◽  
Lace Bug ◽  
Distribution Ranges ◽  
The Ryukyu Islands ◽  
Two New Species ◽  
First Time ◽  
Hedera Rhombea ◽  
Host Plant Relationships

Two lace bug genera, Baeochila Drake & Poor, 1937 and Idiocysta China, 1930 (Hemiptera: Heteroptera: Tingidae) are recorded from Japan for the first time, and two new species, B. horvathi sp. nov. and I. takarai sp. nov., are described. The former was collected from the vines of Hedera rhombea (Miq.) Bean (Araliaceae) and the bark of Trachycarpus fortunei (Hook.) H.Wendl. (Arecaceae) in suburbanized areas of Honshu, Shikoku and Kyushu, and the latter was collected from the leaves of Freycinetia formosana Hemsl. (Pandanaceae) in the laurilignosa ecosystem of the Ryukyu Islands. The distribution ranges and host plant relationships of the two new species are discussed. Keys to all species of the two genera and photographs of living individuals for the new species are also presented. 

Sardinella alcyone n. sp., a new sardine (Teleostei: Clupeiformes: Clupeidae) from the northwestern Pacific Ocean

Zootaxa ◽  
2019 ◽  
Vol 4702 (1) ◽  
pp. 19-25 ◽  
Author(s):  
HARUTAKA HATA ◽  
HIROYUKI MOTOMURA
Keyword(s):  
New Species ◽  
Dark Spot ◽  
Northwestern Pacific ◽  
Ryukyu Islands ◽  
Lower Jaw ◽  
The Ryukyu Islands ◽  
Southwestern Taiwan ◽  
Gill Raker ◽  
Fin Length ◽  
Pelvic Fin

The new sardine Sardinella alcyone n. sp. is described on the basis of 19 specimens collected from the Ryukyu Islands, Japan and southwestern Taiwan. The new species closely resembles Sardinella pacifica Hata & Motomura 2019, both species having lateral scales with centrally discontinuous striae, a dark spot on the dorsal-fin origin, the pelvic fin with 8 rays, deciduous body scales, and very similar numbers of prepelvic and postpelvic scutes, scale rows in the longitudinal series, and pseudobranchial filaments. However, the new species is distinguished from S. pacifica by having lower total gill-raker counts on the first, second, third and fourth gill arches, and on the posterior face of the third gill arch (99–112, 97–115, 79–98, 62–77, and 25–31, respectively, vs. 112–137, 112–148, 95–127, 78–106, and 30–43), and greater pectoral fin (20.7–23.4% SL vs. 18.2–20.8%), pelvic fin (11.9–13.1% SL vs. 10.3–11.9%), maxilla (10.8–12.4% SL vs. 9.3–10.9%), lower jaw (11.8–13.4% SL vs. 10.4–11.6%), and pre-anal-fin length (77.4–82.3% SL vs. 72.9–79.3%) proportions. 

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