161,027 species and infraspecific names are in the database, 22,719 images, 62,633 bibliographic items, 473,224 distributional records.

Hemiptychus Ehrenberg, 1848, nom. rejic.

Holotype species: Hemiptychus ornatus Ehrenberg

Currently accepted name for the type species: Arachnodiscus ornatus (Ehrenberg) Ehrenberg

Original publication:Ehrenberg, C.G. (1848). Über zwei neue Genera kieselschaliger Polygastern aus dem Guano und über die neue Art von Guano aus Patagonien, welche das dänische Schiff Waldemar 1847 gebracht hat. Bericht über die zur Bekanntmachung geeigneten Verhandlungen der Königlich-Preussischen Akademie der Wissenschaften zu Berlin 1848: 5-8.
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Taxonomic status: currently regarded as a synonym of Arachnoidiscus.

Taxonomic notes
According to CAS, "Name rejected vs. Arachnoidiscus Deane ex Shadbolt 1852 (nom. cons.) (see ICBN 1956, p. 200). Nomenclatural synonym of Arachnoidiscus Bailey ex Ehrenberg 1849 (nom. rej.). Ehrenberg abandoned the genus name in 1849 (Ber. Akad. Wiss. Berlin, 1849, p. 63) in favor of Arachnoidiscus because of a prior Hemiptycha in Entomology. Mann 1907, p. 267 resurrected the genus. Originally monotypic." - (31 Mar 2011) - M.D. Guiry

Numbers of names and species: There are 9 species names in the database at present.

Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):

Click here to also show infraspecific names in the list below.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

Created: 02 November 2003 by M.D. Guiry

Verified by: 31 March 2018 by Salvador Valenzuela Miranda

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=46848

Citing AlgaeBase
Please cite this record as:
Salvador Valenzuela Miranda in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 18 April 2021.

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