title: A New Species of Hyperbenthic Cyclopoid Copepod from Japan: First Record of the Genus Cyclopicina in the Indo-Pacific Region.
abstract: A new species of the cyclopinid genus Cyclopicina, C. toyoshioae sp. nov., was collected from the hyperbenthic layer off northern Kyushu Island, Japan; its description is based on two adult female specimens. This is the first record of the genus from the Indo-Pacific region. The new species can be distinguished from its two known congeners in: (1) the relatively short antennules which do not reach the posterior margin of the dorsal cephalothoracic shield; (2) the shape of seminal receptacles; (3) the segmentation and armature of the cephalothoracic appendages; (4) the shape of the basal protrusion between the rami of legs 1-4; (5) the presence of three outer spines on the third exopodal segment of leg 4; and (6) the presence or absence of outer setae on the free exopodal segment of leg 5. The genus Cyclopicina shows a wide but scattered distribution in hyperbenthic layers, from the continental shelves to deep-sea basins, in the northern hemisphere.
authors.affiliation: 1 Takehara Marine Science Station, Setouchi Field Science Center, Graduate School of Biosphere Science, Hiroshima University, 5-8-1 Minato-machi, Takehara 725-0024, Japan.
authors.forename: Susumu
authors.initials: S
authors.lastname: Ohtsuka
authors.affiliation: 1 Takehara Marine Science Station, Setouchi Field Science Center, Graduate School of Biosphere Science, Hiroshima University, 5-8-1 Minato-machi, Takehara 725-0024, Japan.
authors.forename: Hayato
authors.initials: H
authors.lastname: Tanaka
authors.affiliation: 2 Department of Life Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom.
authors.forename: Geoffrey A
authors.initials: GA
authors.lastname: Boxshall
mesh_terms: D063147:Animal Distribution; D000818:Animals; D033342:Copepoda / Q000033:anatomy & histology* / Q000145:classification*; D005260:Female; D007564:Japan; D010140:Pacific Ocean; D013045:Species Specificity
keywords: Copepoda; Cyclopicina; Cyclopoida; Indo-Pacific; hyperbenthic; taxonomy