Microcostatus pseudomuralis (Hust.) Lange-Bert. Microcostatus pseudomuralis (Hust.) Lange-Bert. in Iconogr. Diatomol. 6: 291. 19991is new combination for Navicula pseudomuralis Hust.1. 2nd, corrected printing(Basionym:) descripto Hust. 1937, Arch. Hydrobiol. 15, p. 245, fig. 19: 25-27