title: Deep-Sea decapod crustaceans (Caridea, Polychelida, Anomura and Brachyura) collected from the Nikko Seamounts, Mariana Arc, using a remotely operated vehicle "Hyper-Dolphin".
abstract: Samples and images of deep-water benthic decapod crustaceans were collected from the Nikko Seamounts, Mariana Arc, at depths of 520-680 m, by using the remotely operate vehicle "Hyper-Dolphin", equipped with a high definition camera, digital camera, manipulators and slurp gun (suction sampler). The following seven species were collected, of which three are new to science: Plesionika unicolor n. sp. (Caridea: Pandalidae), Homeryon armarium Galil, 2000 (Polychelida: Polychelidae), Eumunida nikko n. sp. (Anomura: Eumunididae), Michelopagurus limatulus (Henderson, 1888) (Anomura: Paguridae), Galilia petricola n. sp. (Brachyura: Leucosiidae), Cyrtomaia micronesica Richer de Forges & Ng, 2007 (Brachyura: Inachidae), and Progeryon mus Ng & Guinot, 1999 (Brachyura: Progeryonidae). Affinities of these three new species are discussed. All but H. armarium are recorded from the Japanese Exclusive Economic Zone for the first time. Brief notes on ecology and/or behavior are given for each species.
authors.affiliation: Natural History Museum and Institute, Chiba, 955-2 Aoba-cho, Chuo-ku, Chiba, 260-8682 Japan.; Email: komai@chiba-muse.or.jp.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Komai
authors.affiliation: Japan Agency of Marine Science and Technology, 2-15 Natsushima-cho, Yokosuka, Kanagawa, 237-0061.; Email: tsuchida@jamstec.go.jp.
authors.forename: Shinji
authors.initials: S
authors.lastname: Tsuchida
mesh_terms: D000818:Animals; D003445:Crustacea / Q000033:anatomy & histology / Q000145:classification*; D056127:Hydrobiology / Q000295:instrumentation* / Q000379:methods; D009792:Oceans and Seas; D011825:Radar