Solitary. In girdle view the frustule is shaped like an 'eight', with the central area very narrow. In valve view its shape is ovoid to lanceolate. The lateral area is more or less hyaline. On the valve surface there are transversal striae.

Marine.

Distribution: as Tropidoneis lepidoptera. Europe: Romania (Caraus, 2002).

The algae of Romania., Studii si Cercetari, Universitatea Bacau, Biologie 7, Caraus I., 2002, 1-694

Synopsis of the naviculoid diatoms. Part I., Kongliga Svenska Vetenskapsakademiens Handlingar, ser. 4 26(2):, Cleve P.T., 1894, 1-194

Coastal diatom-environment relationships from the Gulf of Finland, Baltic Sea ., Journal of Phycology 42:, Weckstrom K., Juggins S., 2006, 21-35.

Phylum Ochrophyta: brown and golden-brown algae, diatoms, silicioflagellates, and kin., In: New Zealand inventory of biodiversity. Volume Three. Kingdoms Bacteria, Protozoa, Chromista, Plantae, Fungi. (Gordon, D.P. Eds), Christchurch: Canterbury University Press., Harper M.A., Cassie Cooper V., Chang F.H., Nelson W.A. e Broady P.A., 2012, 114-163

Listado preliminar de especies marinas de Canarias., Tenerife: Observatorio Ambiental Granadilla, Anon, 2011, 1-174