WoRMS source details
Furuya, H. (2005). A new species of dicyemid mesozoan (Dicyemida: Dicyemidae) from Sepioteuthis lessoniana (Mollusca: Cephalopoda), with notes on Dicyema orientale. Species Divers. 10(1): 45-62
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Publication
A new species of dicyemid mesozoan, Dicyema koshidai sp. nov., is described from Shiroika, Sepioteuthis lessoniana Lesson, 1830, collected off Uozu in Toyama Bay and off Mihonoseki in the Sea of Japan. The dicyemid is a large species that reaches a length of about 5000µm. The vermiform stages are characterized as having 32-40 peripheral cells, a conical calotte, and an axial cell that extends to the middle of the metapolar cells. Infusoriform embryos consist of 37 cells; two nuclei are present in each urn cell and the refringent bodies are solid. The dicyemids live in folds of the renal appendages of the cephalopod host. This is the second dicyemid species to be described from S. lessoniana. Additional details of the first species, D. orientale Nouvel and Nakao, 1938, are described. The dicyemid fauna in S. lessoniana is discussed.
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Dicyema koshidai Furuya & Tsuneki, 2005 (original description)
Dicyema orientale Nouvel & Nakao, 1938 (additional source)
Dicyema orientale Nouvel & Nakao, 1938 (additional source)
Honshu Island for Dicyema orientale Nouvel & Nakao, 1938
Shimane for Dicyema koshidai Furuya & Tsuneki, 2005
Shiriya-zaki for Dicyemodeca anthinocephalum Furuya, 1999
Toyama Bay for Dicyema koshidai Furuya & Tsuneki, 2005
Shimane for Dicyema koshidai Furuya & Tsuneki, 2005
Shiriya-zaki for Dicyemodeca anthinocephalum Furuya, 1999
Toyama Bay for Dicyema koshidai Furuya & Tsuneki, 2005
Syntype SBMNH 353227, identified as Dicyema koshidai Furuya & Tsuneki, 2005
Syntype SBMNH 353228, identified as Dicyema orientale Nouvel & Nakao, 1938
Syntype OUM ME-00001, identified as Dicyema koshidai Furuya & Tsuneki, 2005
Syntype OUM ME-00002, identified as Dicyema orientale Nouvel & Nakao, 1938
Syntype SBMNH 353228, identified as Dicyema orientale Nouvel & Nakao, 1938
Syntype OUM ME-00001, identified as Dicyema koshidai Furuya & Tsuneki, 2005
Syntype OUM ME-00002, identified as Dicyema orientale Nouvel & Nakao, 1938
Etymology
The species is named in honor of the late Dr. Yutaka Koshida (Professor Emeritus, Osaka University), who was an ... [details]