著者
Kazuya Nagasawa
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.19, no.2, pp.151-156, 2014-11-25 (Released:2018-03-30)
被引用文献数
1 2

An adult male specimen of the amphibian acanthocephalan Acanthocephalus lucidus Van Cleave, 1925 was isolated from the intestine of a whitespotted char, Salvelinus leucomaenis leucomaenis (Pallas, 1814), collected from a stream in Aomori Prefecture, northern Japan. This represents the second record of fish infection by this species of acanthocephalan. The life cycle of A. lucidus is discussed, and the char is assumed to have become infected by preying on a frog harboring the specimen. The known vertebrate hosts of A. lucidus and the geographical distribution of this species in Japan and East Asia are tabulated.
著者
Aoi Tsuyuki Yuki Oya Hiroshi Kajihara
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.24, no.2, pp.137-143, 2019-07-25 (Released:2019-07-25)
参考文献数
21
被引用文献数
3

We describe a new species of polyclad flatworm, Prosthiostomum torquatum sp. nov., from the rocky intertidal zone in Shirahama, on the Pacific coast of middle Honshu, Japan. Prosthiostomum torquatum is characterised by a unique dorsal colouration, which is comprised of i) numerous orange maculae and blue dots dispersed all over the dorsal surface, ii) a transverse dark-brown line in the anterior part of the body running slightly anterior to another transverse white line, both of which are slightly bent backwards at mid-point, and iii) an incomplete, mesh-like, median band made by dark-brown pigments, fading away posteriorly. By this dorsal colour pattern, the new species can be distinguished from similar congeners such as P. trilineatum Yeri and Kaburaki, 1920 and P. komaii Kato, 1944. We performed a molecular phylogenetic analysis based on 462-bp partial mitochondrial cytochrome c oxidase subunit I (COI) sequences of four species of Prosthiostomidae currently available in public databases in addition to that of P. torquatum. In the resulting tree, P. torquatum was sister to Lurymare clavocapitata Marquina, Aguado, and Noreña, 2015 originally described from Lizard Island, Australia. While these two share a similar dorsal colouration, P. torquatum can be distinguished from L. clavocapitata by i) the absence of a common muscle bulb/sheath enclosing the whole male copulatory apparatus, ii) the median mesh-like band comprised of dark-brown pigments, and iii) COI uncorrected p-distance being 0.094. As a result, our phylogenetic tree indicates the possibility that Prosthiostomum and Lurymare as currently diagnosed may not be monophyletic, and that the common muscle bulb enclosing the whole male copulatory apparatus may not be appropriate as a diagnostic character for Lurymare.
著者
Ko Tomikawa Teruo Ishida Shunsuke F. Mawatari
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.10, no.1, pp.19-26, 2005-02-28 (Released:2018-03-30)
参考文献数
13
被引用文献数
3

A new species of cyclopoid copepod, Allocyclops (Allocyclops) austronipponicus, is described from a freshwater habitat in Okinawa Island, Japan. This is the first record of the genus Allocyclops from Asia. The new species is distinguished from its congeners by having the following combination of character states: (1) antennal seta representing exopod present; (2) maxillule with two-segmented palp; (3) legs 1-4 each with inner coxal seta; (4) distal endopodal segment of leg 4 with three inner and one outer setae and two apical spines; and (5) seta present on remnant of proximal segment of leg 5, this seta short in comparison to length of somite.
著者
Misako Urabe Takafumi Nakano
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.23, no.2, pp.181-182, 2018-11-25 (Released:2018-11-25)
参考文献数
15

Tangenarchopsis nom. nov. is herein proposed for the digenean genus Tangiopsis Skrjabin and Guschanskaja, 1955 since the latter generic name is preoccupied by the hemipteran genus Tangiopsis Uhler, 1901.
著者
山西 良平
出版者
The Japanese Society of Systematic Zoology
雑誌
動物分類学会誌 (ISSN:02870223)
巻号頁・発行日
vol.25, pp.11-16a, 1983-06-25 (Released:2018-03-30)

1939年にペルー沖で発見され,以後記録の無かったPisionellaが,日本海の丹後半島の砂底から得られた.吟味の結果,これは唯一の既知種であるP. hancockiと固定されたが,剛毛の配列,形態等に地理的変異と思われる微細な差異が存在する.
著者
Schmidt-Rhaesa Andreas
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.9, no.2, pp.97-107, 2004-05-31 (Released:2018-03-30)
参考文献数
20
被引用文献数
6 9

From Japan, 11 species of freshwater Nematomorpha have been described to date, but there are very few photographic documentations of any of them. This investigation describes specimens from the Lake Biwa Museum (Shiga Prefecture, Japan) and supplies the first SEM pictures and additional data for the species Chordodes fukuii Inoue, 1951, Japanese specimens of C. japonensis Inoue, 1952, and Paragordionus kawamurai Yamaguti, 1943. Two specimens likely belong to the genus Gordionus, which has not been reported from Japan before, but they could not be determined to the species level. Several specimens belonging to the genus Gordius could not be assigned to a certain species. This is due to general problems with the status of several Gordius species arising from the scarcity of taxonomically relevant characters.
著者
Makoto Okamoto Hiroyuki Motomura Koichi Hoshino Takashi Yanagimoto Toshiro Saruwatari
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.17, no.1, pp.1-5, 2012-05-25 (Released:2018-03-30)
参考文献数
21

Two specimens (124.0-148.6mm standard length) of a scorpionfish, Idiastion pacificum Ishida and Amaoka, 1992, were collected from the central North Pacific, representing the first record of the species from this area. This finding extends the distributional range of Idiastion pacificum, which was previously known only from the Kyushu-Palau Ridge, western North Pacific. This study provides new morphological data and a color photograph of I. pacificum based on these two additional specimens, with a comparison to Idiastion kyphos Eschmeyer, 1965.
著者
Ronald Sluys Cornelis J. Hazevoet
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.4, no.2, pp.243-256, 1999-12-25 (Released:2018-03-30)
参考文献数
65
被引用文献数
10 11

The paper outlines the current discussion on the species problem : what actually is a species and how do we recognize such an entity in nature? Six of the major species notions are briefly explained. A distinction can be made between species concepts based on the process of interbreeding and concepts that focus on common descent. Application of these different types of species concept may give incompatible results. It is discussed to what extent we can be certain that the species delimited represent objective realities in nature and are independent of the discovery procedure applied. Further, it is argued that because of the existence of various evolutionary processes, nature can be divided into several natural entities, each representing a species of some sort. The choice of a particular species concept is determined by that aspect or process in nature that forms the focus of one's research agenda. This plea for pluralism should preferably not affect taxonomic procedure ; named species taxa should be based on only one, taxic species concept.
著者
Takao Shimizu
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.5, no.3, pp.285-303, 2000-08-31 (Released:2018-03-30)
参考文献数
24
被引用文献数
3 3

Eight species of the genus Paraleuctra are recognized in Japan, six of them being described as new herein : P. ezoensis from Hokkaido and P. ambulans, P. similis, P. hokurikuensis, P. angulata, and P. concava from Honshu. An apterous and a short-winged species are included. A neotype is designated for Leuctra okamotoa Claassen, 1936 ; this species is now transferred from Rhopalopsole to the present genus and is regarded as a senior subjective synonym of P. gracilis Kawai, 1967. Paraleuctra cercia (Okamoto, 1922) is redescribed and regarded as a senior subjective synonym of both P. forficularis (Okamoto, 1922) and L. higashiyamae Kohno, 1965. Paraleuctra elongata Kawai, 1967 is transferred to Rhopalopsole, and P. nipponica (Okamoto, 1922) and Rhopalopsole gifuensis Kohno, 1965 are transferred to Perlomyia. A key is provided for Asian species of Paraleuctra.
著者
Hiro´omi Uchida Eduardo Lopéz Masanori Sato
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.24, no.1, pp.69-95, 2019-05-25 (Released:2019-05-25)
参考文献数
59
被引用文献数
1 3

In 2004, Uchida published a partial revision of the family Hesionidae in Japan, where four new genera were proposed and 13 species newly described. However, both the holotype fixations and their depository numbers were omitted in the original article, rendering the names unavailable after Article 16.4 of the International Code of Zoological Nomenclature. In this work, the names are made available by clarifying the depository of the types. We provide diagnoses for the four new genera (Synsyllidia Uchida, Uncopodarke Uchida, Parahesiocaeca Uchida, and Ichthyohesione Uchida) and 13 new species (Synsyllidia alternata Uchida, Oxydromus brevipodius Uchida, O. bunbuku Uchida, O. constrictus Uchida, O. fauveli Uchida, O. longifundus Uchida, O. okudai Uchida, O. parapallidus Uchida, Heteropodarke kiiensis Uchida, Uncopodarke intermedia Uchida, Microphthalmus itoi Uchida, Parahesiocaeca japonica Uchida, and Ichthyohesione gorgasiae Uchida). A key to species of Hesionidae recorded to date from Japan is also presented.
著者
Ken-ichi Okumura Kazuyuki Honki Shin-ya Ohba
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.24, no.2, pp.247-252, 2019-11-25 (Released:2019-11-25)
参考文献数
27
被引用文献数
2 1

Iwogumoa songminjae (Paik and Yaginuma in Paik et al., 1969) is recorded for the first time from Japan on the basis of specimens collected in the Tsushima Islands, Kyushu and previously identified as I. insidiosa (L. Koch, 1878). The relationships among the Japanese species of Iwogumoa Kishida, 1955 are analyzed using mitochondrial cytochrome c oxidase subunit I with various Japanese species of Coelotes Blackwall, 1841 sensu lato as the outgroup. A new synonym is proposed through a comparison of morphological characteristics and the results of our molecular analysis: Coelotes iyoensis Nishikawa, 2009 (known only from the male) is a junior synonym of Coelotes mohrii Nishikawa, 2009 (known only from the female).
著者
楊 定 永冨 昭
出版者
The Japanese Society of Systematic Zoology
雑誌
動物分類学会誌 (ISSN:02870223)
巻号頁・発行日
vol.48, pp.54-62, 1992-12-25 (Released:2018-03-30)

Suragina caerulescens(BRUNETTI,1912)はビルマ,ネパール,インド(W.Bengal),日本(北海道,本州,四国,九州)に広く分布し,従来Suragina属のatypicalな一員として知られていた.中国に近縁の別種が存在することがわかり,ここでyangiと命名するのを機会にしてAsuraginaという1新属を創設する.模式種はcaerulescensである.
著者
織田 秀実
出版者
The Japanese Society of Systematic Zoology
雑誌
動物分類学会誌 (ISSN:02870223)
巻号頁・発行日
vol.10, pp.31-39c, 1974-12-14 (Released:2018-03-30)

1972年秋,富士川胡の一つ,河口湖に,従来,北アメリカ東部と中央ヨーロッパでしか記録されていなかった炭水産コケムシpectinatella magnifica(LEIDY)の群体塊が出現した(MAWATARI, 1973)。ところが1973年には富士五湖の他の一つ,精進湖にもこの群体塊が多数出現した。9月初め岸辺の水中の岩・に大小様々の群体塊が毬(まり)状に発達し,分泌した寒天質塊の表面を多数の群体が多角模様をなしておおっていた。大きな群体塊は岩から剥れて分厚い円盤状(直径約60 cm)となって水面に浮上していた。11月初めには岩に囲まれた静かな水面に畳一畳ほどもあるけ大な群体塊となって浮いていた。長さでは2.8mに達する細長いものもあった。個々のポリプ体は1.5mmほどで,(Cristatella mucedo CUVIER(アユミコケムシ)を思わせる。口上突起と目の周辺に赤い色素があるのはこの種の著しい特徴である。触手冠の両腕の先端部および包体の肛門側に乳白色の塊があるが,これらはKRAEPELIN(1887)がいう上皮線(epidermal gland)からの分泌物である。スタトブラストは丸味を帯びた角形で,長径は約1mm,川縁部から錨形をした軸が11〜22本伸びでている。群体から放出されたスタトブラストは必ず水面に浮上し,数週間は寒天質層に包されている。精進湖は冬期結氷するが,越冬し水面に浮遊するスタトブラストは,現地で,5月下旬に発芽していた。8月に幼生が出現した。幼生は卵形で直径1〜2mm, 1〜5個の芽を有するが,通常は4個。外分の表面にある繊毛の運動で,芽のある方を下にして,数時間浮遊した後,ものに付着して変態した。このコケムシの群体塊がボール状に発達し,しかも表面が個々の群体によって多角模様をなしていることから和名として"オオマリコケムジ"という名称を提案したい。 今まで日本にいなかったこのコケムシが河口湖や精進湖に突如出現するようになった原因はまだ判明していない。国際的に人や物資の交流が盛んになった今日,偶然の機会に,ものに付着したスタトブラストがこれらの湖に持たらされたのであろう。また渡り鳥によるスタトブラストの"空輸"も考慮されよう。1974年の夏には石川県の柴山潟にもこの群体塊が多量に出現した。今後,このコケムシの分布の推移に注目しておかなければならない。(第10回動物分類学今大会にて講演)
著者
Gento Shinohara Mihail V. Nazarkin Mamoru Yabe Igor A. Chereshnev
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.11, no.2, pp.93-97, 2006-05-31 (Released:2018-03-30)
参考文献数
6
被引用文献数
7 7

The genus Magadanichthys is established as a replacement name for the zoarcid fish genus Magadania Shinohara, Nazarkin and Chereshnev, 2004, which is preoccupied by an extinct brachiopod genus, Magadania Ganelin, 1977, and an extant lepidopteran genus, Magadania Kirpichnikova and Yamanaka, 2001. Magadanichthys contains only Magadanichthys skopetsi (Shinohara, Nazarkin and Chereshnev, 2004). Two new specimens caught in the sublittoral of the Shantar Islands and Sakhalin represent the southernmost records of the species. A description of the new specimens and new biological data are provided.
著者
Yuta Inoue Hiromitsu Endo Hiroyuki Motomura Mizuki Matsunuma
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.25, no.1, pp.39-47, 2020-01-25 (Released:2020-01-25)
参考文献数
26

Epinephelus kupangensis Tucker, Kurniasih, and Craig, 2016, previously known from the Indo-West Pacific as far north as Taiwan, was recorded from Japan for the first time on the basis of two specimens (98.1–384.6 mm SL) collected from Tosa Bay, Kochi and Okinawa prefectures. The Kochi specimen had been previously reported as the first Japanese specimen of “Kokuten-aohata”, Epinephelus amblycephalus (Bleeker, 1857). Epinephelus kupangensis differs from the latter in having slightly lower numbers of lateral-line scales (46–49 vs. 48–51) and lateral scale series 91–99 (vs. 103–120), and lacking a U-shaped white marking dorsolaterally on the head and a white band below the orbit (vs. both present). The standard Japanese name “Kokuten-aohata” should be applied to E. kupangensis, the new standard Japanese name “Yahazu-aohata” being proposed for E. amblycephalus.
著者
Takafumi Nakano
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.26, no.2, pp.205-206, 2021-09-10 (Released:2021-09-10)
参考文献数
9

The spelling of the specific name monticolus in the scientific name of a spider, Cybaeus monticolus Kobayashi, 2006, does not violate any relevant provisions of the International Code of Zoological Nomenclature. This spelling is, therefore, the “correct original spelling” of the specific name under Article 32.2 of the Code. Regardless of whether this name is deemed an adjective or a noun in apposition, it should be maintained unaltered when it is combined with the generic name Cybaeus L. Koch, 1868, the gender of which is masculine. The later spelling monticola, as presented in the combination Cybaeus monticola in a recent arachnological treatise and then in an important online taxonomic resource from which its use appears to be spreading, is an “incorrect subsequent spelling” under Article 33.3 of the Code.
著者
Kota Furukawa
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.17, no.2, pp.177-186, 2012-11-25 (Released:2018-03-30)
参考文献数
11
被引用文献数
1

The genus Holopsis Broun, 1883 from Japan is revised. Five species including two newly recorded species and one new species are described: H. punctipennis (Matthews, 1899), H. kirejtshuki Bowestead, 2003 (new record), H. kurilensis Bowestead, 2003 (new record), H. lewisei Bowestead, 2003, and H. ryukyuensis sp. n. Males of H. punctipennis and H. lewisei are described for the first time.
著者
Takafumi Nakano
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.18, no.1, pp.99-103, 2013-05-25 (Released:2018-03-30)
参考文献数
16
被引用文献数
3 4

Two specimens of the large, predaceous salifid leech Mimobdella japonica Blanchard, 1897 were collected from Okinawajima island, Ryukyu Islands, Japan, representing the first record of this species from Okinawajima. A description is provided of the external and internal morphology of these specimens and two additional specimens of M. japonica from Amami-oshima island, also in the Ryukyu Islands. COI sequences showed no difference between the two specimens of M. japonica from Okinawajima and the two specimens from Amami-oshima (K2P distance=0%). This suggests that M. japonica is an introduced species in one or both of these islands.
著者
Nobuhiro Saito Kaori Wakabayashi Takeya Moritaki
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.25, no.1, pp.75-87, 2020-02-15 (Released:2020-02-15)
参考文献数
46
被引用文献数
3

Three new species of the ascothoracidan crustacean genus Dendrogaster Knipovich, 1890 (Dendrogasteridae) are described from goniasterid sea-stars in Japan. Dendrogaster komatsuae sp. nov. and D. tobasuii sp. nov. were found respectively in the coelomic cavities of Lithosoma japonica Hayashi, 1952 and two species of Mediaster: M. arcuatus (Sladen, 1889) and M. brachiatus Goto, 1914 from the Kumano-nada Sea. Dendrogaster nagasakimaruae sp. nov. was similarly found in Nymphaster euryplax Fisher, 1913 from the East China Sea. Partial DNA sequences of the cytochrome c oxidase subunit I and 16S ribosomal RNA genes were determined for D. tobasuii sp. nov. These findings represent the first records of Dendrogaster from the host family Goniasteridae in Japan.
著者
Yuriko Nakao Akira Tsukagoshi
出版者
The Japanese Society of Systematic Zoology
雑誌
Species Diversity (ISSN:13421670)
巻号頁・発行日
vol.25, no.1, pp.1-9, 2020-01-01 (Released:2020-01-01)
参考文献数
21
被引用文献数
1

A new ostracod species, Semicytherura obitsuensis sp. nov., is described from the intertidal zone of the Obitsu River estuary, Chiba Prefecture, central Japan. As S. obitsuensis sp. nov. individuals were collected from muddy sand bottoms in tidal creeks, possess some carapace-features comparable to those of interstitial and infaunal ostracods, and were observed to crawl in detritus rich fine-grained sediment in the laboratory, we concluded that this new species is an infaunal species.