Taxon Account

Microcostatus J.R. Johansen & J.C. Sray; 1998; 97,98

Key references


Frustules isovalvar, bilaterally symmetrical, naviculoid.

Raphe located on prominent sternum, sternum constricted on one side at centre. Proximal raphe ends straight or slightly deflected to one side, terminal raphe fissures curved to the opposite side.

Axial area formed by two longitudinal depressions located on each side of the sternum; depressions contain transversally orientated microcostae. Conopeum absent.

Stria uniseriate, separated by hyaline area from row of mantle areolae.

Two lateral chloroplasts mostly adjacent to cingulum on each side of the valve.


References are given in chronological order.

Johansen J. R., Sray J. C. 1998. Microcostatus gen. nov., a new aerophilic diatom genus based on Navicula krasskei Hustedt. Diatom Research. 13(1): 93-101. Morphology; Taxonomy; Description
Van de Vijver B., Beyens L., Iserentant R. 2004. Microcostatus zackenbergensis Van de Vijver, Beyens et Iserentant sp. nov. and Microcostatus deslooveri Iserentant et Van de Vijver sp. nov.: two new aerophilic diatoms from Greenland and Papua New Guinea. Nova Hedwigia. 78(3-4): 389-397. Morphology; Taxonomy; Illustrations; Ecology
Metzeltin D., Lange-Bertalot H. 2007. Tropical diatoms of South America II. Special remarks on biogeography disjunction. Iconographia Diatomologica, Vol. 18., Annotated Diatom Micrographs. Diversity-Taxonomy-Biogeography. H. Lange-Bertalot (ed.), A.R.G. Gantner Verlag K.G. 877 pp Morphology; Taxonomy; Illustrations
Taylor J.C., Levanets A., Blanco S., Ector L. 2010. Microcostatus schoenmanii sp. nov., M. cholnokyi sp. nov. and M. angloensis sp. nov. three new terrestrial diatoms (Bacillariophyceae) from South Africa. Phycological Research . 58: 177-187. Taxonomy; Morphology; Illustrations; Ecology
Van de Vijver B., Ector L., de Haan M., Zidarova R. 2010. The genus Microcostatus in the Antarctic Region. Diatom Research. 25(2): 417-429. Morphology; Taxonomy; Illustrations; Ecology
Stanek-Tarkowska J., Wetzel C.E., Noga T., Ector L. 2016. Study of the type material of Navicula egraria Hustedt and description of two new aerial Microcostatus (Bacillariophyta) species from Central Europe. Phytotaxa. 280(2): 163-172. Morphology; Taxonomy; Illustrations
This page should be cited as:

Jüttner I., Wetzel C.E., Van de Vijver B., Ector L. Microcostatus J.R. Johansen & J.C. Sray; 1998; 97,98. In: Jüttner I., Carter C., Chudaev D., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M.. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at [Accessed:  ].

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Record last modified: 29/09/2021