Amphidiniella T.Horiguchi, 1995

Holotype species: Amphidiniella sedentaria Horiguchi

Original publication and holotype designation: Horiguchi, T. (1995). Amphidinella sedentaria gen. et sp. nov. (Dinophyceae), a new sand-dwelling dinoflagellate from Japan. Phycological Research 43: 93-99.

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Description: Small (13-20 µm long), slightly dorsoventrally compressed flagellate with two heterodynamic flagella. Transverse flagellum in the slightly displaced cingulum, separating the small episome (about 1/5 of total body length) from the large, sack-shaped hyposome. Longitudinal flagellum in the long sulcus. Cell wall composed of cellulosic plates, perforated by many trichocyst pores. Plate formula : Po, 4a, 1a, 7", 5c, 4s, 6"', 2"". A ventral pore is surrounded by plates 1',3' and 7". Nucleus and chloroplasts of the dinokaryotic type, the latter with stalked pyrenoid which is surrounded by a starch sheet.

Information contributed by: M. Elbrächter. The most recent alteration to this page was made on 2024-05-31 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Hoppenrath, M., Murray, S.A., Chomérat, N. & Horiguchi, T. (2014). Marine benthic dinoflagellates - unveiling their worldwide biodiversity. Kleine Senckenberg-Reihe Vol. 54. pp. [1]-276. Frankfurt am Main & Stuttgart: V. Mosbrugger & E. Schweizerbartsche Verlagsbuchhandlung.

Comments: Habitat : Marine, wet sand of sandy beaches or surface of dead corals in Japan and South Africa, perhaps common in tropical and subtropical waters. Cells may attach to surfaces but can swim also rapidly.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 31 May 2024. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 22 July 2024

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