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Furuya, H. (2005). Three new species of Dicyema (Dicyemida: Dicyemidae) from Octopus kagoshimensis (Mollusca: Cephalopoda: Octopodidae). Species Divers. 10(4): 231-247
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Three new species of dicyemid mesozoan are described from Octopus kagoshimensis Ortmann, 1888 collected off Irino in Tosa Bay, sourthern Shikoku, Japan. Dicyema tosaense sp. nov. is a small species that reaches about 800µm in length. The vermiform stages are characterized by 16-18 peripheral cells, a conical calotte, and an axial cell that extends to the base of the metapolar cells. Infusoriform embryos consist of 37 cells; two nuclei are present in each urn cell and the refringent bodies are solid. Dicyema irinoense sp. nov. is a species of medium size that reaches about 1300µm in length. The vermiform stages are characterized by 22 peripheral cells, a discshaped calotte, and an axial cell that extends to the base of the propolar cells. Infusoriform embryos consist of 37 cells; a single nucleus is present in each urn cell and the refringent bodies are solid. Dicyema sphaerocephalum sp. nov. is a species of medium size and reaches about 1000µm in length. The vermiform stages are characterized by 18-20 peripheral cells, a rounded calotte, and an axial cell that extends to the base of the propolar cells. Infusoriform embryos consist of 37 cells; two nuclei are present in each urn cell and the refringent bodies are solid. This is the first report of dicyemids in the octopus O. kagoshimensis.
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Dicyema irinoense Furuya, 2005 (original description)
Dicyema sphaerocephalum Furuya, 2005 (original description)
Dicyema tosaense Furuya, 2005 (original description)
Dicyema sphaerocephalum Furuya, 2005 (original description)
Dicyema tosaense Furuya, 2005 (original description)
Tosa Bay for Dicyema irinoense Furuya, 2005
Tosa Bay for Dicyema sphaerocephalum Furuya, 2005
Tosa Bay for Dicyema tosaense Furuya, 2005
Tosa Bay for Dicyema sphaerocephalum Furuya, 2005
Tosa Bay for Dicyema tosaense Furuya, 2005
Syntype SBMNH 358800, identified as Dicyema tosaense Furuya, 2005
Syntype SBMNH 358801, identified as Dicyema irinoense Furuya, 2005
Syntype SBMNH 358802, identified as Dicyema sphaerocephalum Furuya, 2005
Syntype OUM ME-00003, identified as Dicyema tosaense Furuya, 2005
Syntype OUM ME-00004, identified as Dicyema irinoense Furuya, 2005
Syntype OUM ME-00005, identified as Dicyema sphaerocephalum Furuya, 2005
Syntype SBMNH 358801, identified as Dicyema irinoense Furuya, 2005
Syntype SBMNH 358802, identified as Dicyema sphaerocephalum Furuya, 2005
Syntype OUM ME-00003, identified as Dicyema tosaense Furuya, 2005
Syntype OUM ME-00004, identified as Dicyema irinoense Furuya, 2005
Syntype OUM ME-00005, identified as Dicyema sphaerocephalum Furuya, 2005