Michitaka Shimomura

Living together in dead coral rocks: macrosymbiotic communities associated with Bonellia echiuran worms (Annelida: Thalassematidae: Bonelliinae), involving new commensal bivalve and amphipod species

Ryutaro Goto, Isao Hirabayashi, Koji Seike, Momo Yamashita et autres

This dataset contains the digitized treatments in Plazi based on the original journal article Goto, Ryutaro, Hirabayashi, Isao, Seike, Koji, Yamashita, Momo, Shimomura, Michitaka (2024): Living together in dead coral rocks: macrosymbiotic communities associated with Bonellia echiuran worms (Annelida: Thalassematidae: Bonelliinae), involving …

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Redescription and molecular characterization of Mothocya parvostis Bruce, 1986 (Crustacea: Isopoda: Cymothoidae) parasitic on Japanese halfbeak, Hyporhamphus sajori (Temminck & Schlegel, 1846) (Hemiramphidae) with Mothocya sajori Bruce, 1986 placed into synonymy

Hiroki Fujita, Panakkool Thamban Aneesh, Kentaro Kawai, Shin-Ichi Kitamura et autres

This dataset contains the digitized treatments in Plazi based on the original journal article Fujita, Hiroki, Aneesh, Panakkool Thamban, Kawai, Kentaro, Kitamura, Shin-Ichi, Shimomura, Michitaka, Umino, Tetsuya, Ohtsuka, Susumu (2023): Redescription and molecular characterization of Mothocya parvostis Bruce, 1986 (Crustacea: Isopoda: Cymothoidae) …

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Rediscovery of the Red-And-White Commensal Shrimp Athanopsis dentipes (Alpheidae), Revealing an Expanded Host Range Among Spoon Worms (Annelida: Thalassematidae)

Tomoya Hanaoka, Isao Hirabayashi, Takahiro Sugiyama, Keiichi Nomura et autres

The commensal shrimp genus Athanopsis Coutière, 1897 (Alpheidae) includes nine species worldwide. Almost all congeners have been confirmed to be associated with spoon worms (Annelida: Thalassematidae). Athanopsis dentipes Miya, 1980 was originally described about 45 years ago based only on the male …

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Three New Species of Spectrarcturus (Isopoda: Valvifera: Arcturidae) from Kumano Basin, Southwestern Japan

Yuzumi Okumura, Tomoyuki Nakano, Michitaka Shimomura

Three new species of the genus Spectrarcturus Schultz, 1981 (Arcturidae) are described from Kumano-Basin, Japan: S. regularis sp. nov., S. bispinosus sp. nov., and S. crassibrevis sp. nov. Spectrarcturus regularis sp. nov. resembles S. murdochi (Benedict, 1898) from North Pacific and Arctic …

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A new species of Athelges Gerstaecker, 1862 (Isopoda: Epicaridea: Bopyridae) parasitizing hermit crabs in Japan, with molecular phylogenetic analyses

Haruki Shinoda, Naoto Takiyama, Tomoyuki Nakano, Michitaka Shimomura

Abstract Epicaridean isopods are obligate parasites of crustaceans, and members of Athelginae are abdominal bopyrid parasites of hermit crabs. Athelges Gerstaecker, 1862 is the most species-rich genus in the subfamily, but its recognized species diversity in Asia remains low despite many records …

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Litarcturus , Brandt 1990

Yuzumi Okumura, Tomoyuki Nakano, Michitaka Shimomura

Genus Litarcturus, Brandt, 1990 Litarcturus Brandt, 1990: 88–89; Poore, 2001: 224; Poore, 2015: 14. Type species. Litarcturus coppingeri (Miers, 1881). Diagnosis (modified Brandt 1990). Body slender and elongated, as in other arcturids, with tendency to reduce cuticular spines on whole body surface. …

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Litarcturus kumanoensis Okumura, Nakano & Shimomura, 2026, sp. nov.

Yuzumi Okumura, Tomoyuki Nakano, Michitaka Shimomura

Litarcturus kumanoensis sp. nov. [New Japanese name: Kumano-oninanafushi] (Figs. 2–8) Material examined. Holotype: adult male (7.0 mm) (SMBL-V0902), Japan, Shima Spur, south of Shima Peninsula, Kumano Basin, Mie Prefecture, Honshu Island, St-6, 765– 768 m depth, rocks, 33º59.33’N, 136º55.68’E – 33º59.30’N, 136º55.57’E, …

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Litarcturus , Brandt 1990

Yuzumi Okumura, Tomoyuki Nakano, Michitaka Shimomura

Genus Litarcturus, Brandt, 1990 Litarcturus Brandt, 1990: 88–89; Poore, 2001: 224; Poore, 2015: 14. Type species. Litarcturus coppingeri (Miers, 1881). Diagnosis (modified Brandt 1990). Body slender and elongated, as in other arcturids, with tendency to reduce cuticular spines on whole body surface. …

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Litarcturus kumanoensis Okumura, Nakano & Shimomura, 2026, sp. nov.

Yuzumi Okumura, Tomoyuki Nakano, Michitaka Shimomura

Litarcturus kumanoensis sp. nov. [New Japanese name: Kumano-oninanafushi] (Figs. 2–8) Material examined. Holotype: adult male (7.0 mm) (SMBL-V0902), Japan, Shima Spur, south of Shima Peninsula, Kumano Basin, Mie Prefecture, Honshu Island, St-6, 765– 768 m depth, rocks, 33º59.33’N, 136º55.68’E – 33º59.30’N, 136º55.57’E, …

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A new species of Litarcturus Brandt, 1990 (Crustacea: Isopoda: Valvifera: Antarcturidae) from central Japan

Yuzumi Okumura, Tomoyuki Nakano, Michitaka Shimomura

Litarcturus kumanoensis sp. nov. is described from the Kumano Basin, Japan. Litarcturus kumanoensis sp. nov. is distinguished from other members of the genus by these characters: head with 2 supraocular and 2 blunt posterior supraocular spines; pereonite 1 with 2 submedial and …

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Three Ilyarachna species (Isopoda: Asellota: Munnopsidae) showing different bathymetric distributions in Japan and Kuril-Kamchatka Trenches, with descriptions of two new species

Mizuki Ohta, Keiichi Kakui, Shigeaki Kojima, Michitaka Shimomura

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Two new species of the genus Bogidiella (Crustacea: Amphipoda: Bogidiellidae) from Japan

Ko Tomikawa, H. Yoshimura, MUSHI UGOMEKI, Michitaka Shimomura

Two new species of bogidiellid amphipods, Bogidiella isajii and B. painushima are described from an anchialine undersea cave in Minamidaito Island and freshwater flowing through a cave in Ishigaki Island, Ryukyu Islands. Bogidiella isajii sp. nov. differs from its congeners in the …

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